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    Xinjiang Agricultural Sciences    2024, 61 (8): 0-0.  
    Abstract59)      PDF (44862KB)(1150)      
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    Xinjiang Agricultural Sciences    2024, 61 (10): 0-0.  
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    Xinjiang Agricultural Sciences    2024, 61 (6): 0-0.  
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    Study on genotypic differences of anther culture ability in mainly cultivated spring wheat varieties in Xinjiang
    WANG Chunsheng, LI Jianfeng, ZHANG Yueqiang, FAN Zheru, WANG Zhong, GAO Xin, SHI Jia, ZHANG Hongzhi, WANG Lihong, XIA Jianqiang, WANG Fangping, ZHAO Qi
    Xinjiang Agricultural Sciences    2024, 61 (9): 2081-2086.   DOI: 10.6048/j.issn.1001-4330.2024.09.001
    Abstract175)   HTML24)    PDF (710KB)(95)      

    【Objective】 To investigate the genotypic differences in anther culture ability of spring wheat varieties, establish the anther culture technology for wheat in Xinjiang, determine the anther culture ability of main cultivated and recently approved 14 spring wheat varieties, and select high anther culture ability parental materials for wheat breeding in the region. 【Methods】 Using mainly C17-induced culture medium and NT5 differentiation culture medium as the main culture media, the anther culture technology was used to evaluate the callus induction rate, green plant differentiation rate, green plant production rate, albino plant differentiation rate, and albino plant production rate of the test materials, and then the correlation analysis of 5 anther culture traits was carried out. 【Results】 The range of callus induction rate, green plant differentiation rate, green plant production rate, albino plant differentiation rate, and albino plant production rate of 14 genotypes of spring wheat varieties was 0%-3.33%, 0%-220%, 0%-7.30%, 0%-50%, 0%-0.66%, respectively. The anther culture traits differed significantly among different genotypes, with the green plant differentiation rate showing the greatest variation. The callus induction characteristics were positively correlated with the differentiation of green plants and albino plants, but there was no correlation between callus regeneration and the differentiation into green plants or albino plants. 【Conclusion】 Five genotypes are screened out that could produce callus: Xinchun 6, Xinchun 39, Xinchun 43, Xinchun 44, and Xinchun 48. Among them, Xinchun 39 and Xinchun 44 have the highest green plant differentiation rates. The green plant differentiation rate of Xinchun 39 is 7.30%, and that of Xinchun 44 is 1.50%. Xinchun 39 and Xinchun 44 are selected as the core parental materials for anther culture breeding.

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    Effects of replacing chemical fertilizer with organic fertilizer in different proportions and plant nutrients and sugar beet yield
    LU Weidan, ZHOU Yuanhang, MA Xiaolong, GAO Jianglong, FAN Xiaoqin, GUO Jianfu, LI Jianqiang, LIN Ming
    Xinjiang Agricultural Sciences    2024, 61 (7): 1631-1639.   DOI: 10.6048/j.issn.1001-4330.2024.07.009
    Abstract144)   HTML21)    PDF (1276KB)(92)      

    【Objective】To explore the effects of different proportions of organic fertilizers replacing chemical fertilizers on soil nutrient content, plant nutrient uptake, fertilizer utilization rate and sugar beet yield, so as to provide a scientific fertilizer program for achieving high and stable crop yield and soil fertilizer cultivation. 【Methods】A total of 7 treatments were set up: No fertilization control (CK), household conventional fertilization (CF), humic acid organic fertilizer replacing 10% chemical fertilizer (10%HF), humic acid organic fertilizer replacing 20% chemical fertilizer (20%HF), humic acid organic fertilizer replacing 30% chemical fertilizer (30%HF), humic acid organic fertilizer replacing 40% chemical fertilizer (40%HF), Humic acid organic fertilizer replacing 50% chemical fertilizer (50%HF). Soil nutrients, nutrient uptake by sugar beet plants, dry matter accumulation and sugar beet yield were measured. 【Results】The results showed that compared with conventional fertilizer treatment, the content of organic fertilizer in soil was increased by 2.37%-7.38% by humic acid fertilizer. Alkali-hydrolyzed nitrogen, available phosphorus and available potassium increased by 1.07%-11.39%, 10.65%-37.83% and 6.04%-14.68%, respectively. 30%HF and 40%HF increased significantly by 16.91% and 17.65% compared with CF treatment, respectively.【Conclusion】Compared with conventional application of chemical fertilizer by farmers, organic humic acid fertilizer instead of chemical fertilizer in different proportions can significantly increase soil nutrient content, increase nutrient uptake of beet plants, increase dry matter accumulation of beet, and achieve the purpose of reducing chemical fertilizer, changing soil and increasing yield. Among them, organic fertilizer instead of 30% chemical fertilizer treatment has the better effect of increasing yield and improving soil fertility.

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    Analysis of combined application of NPK fertilizers on yield and quality of winter wheat and the fertilizer effect
    SUN Na, MA Lin, ZOU Hui, ZHANG Zhihui, ZHANG Shengjun, HUANG Qiannan, YANG Hui, Dengsilamu Tuerxunbai, LI Zhibin, CAO Junmei, LEI Junjie
    Xinjiang Agricultural Sciences    2025, 62 (1): 1-12.   DOI: 10.6048/j.issn.1001-4330.2025.01.001
    Abstract1546)   HTML35)    PDF (1213KB)(91)      

    【Objective】 It is important to study the effects of nitrogen, phosphorus and potassium (NPK) fertilizer rationing on the yield and quality of wheat and the fertilizer effect, and to find out the optimal NPK fertilizer application rate and fertilizer ration for high yield, high quality and high efficiency of wheat. 【Methods】 The winter wheat cultivar Xindong 42 was used as the test material, and the fertilizer effect test design scheme "3414" was adopted to conduct the field plot test to determine the yield and quality related traits of winter wheat and to fit the fertilizer effect model. 【Results】 Meanwhile the effect of NPK fertilizer on yield showed reciprocal effects, with the size of the reciprocal effects being NPK>NP>NK>PK in the order of NPK>NP>PK. Among the 14 treatments, N2P2K2 had the highest yield and economic benefit of 8,036.03 kg/hm2 and 18,044.85 yuan/hm2, respectively. After being analyzed by the regression equation, the maximum yield of 8,082.75 kg/hm2 was achieved when the application rates of nitrogen, phosphorus and potassium were 190.21, 122.27 and 53.11 kg/hm2, respectively; the best economic benefit achieved was 18,056.37/hm2,when the application rates 171.03, 108.18 and 44.77 kg/hm2, respectively; maximum starch dry basis content 5,742.29 kg/hm2 was obtained 180.00, 125.69 and 50.90 kg/hm2, respectively; maximum wet gluten content 274.64, 69.75 and 138.95 kg/hm2, respectively. 【Conclusion】 Reasonable application of nitrogen, phosphorus and potassium fertilizers could significantly improve the yield, quality and economic benefits of Xindong 42.

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    Evaluation of adaptability of 90 BT transgenic insectresistant cotton varieties (lines) in early cotton areas of Xinjiang
    LI Ying, GUO Wenwen, LI Jiangbo, QU Yanying, CHEN Quanjia, ZHENG Kai
    Xinjiang Agricultural Sciences    2024, 61 (7): 1561-1573.   DOI: 10.6048/j.issn.1001-4330.2024.07.001
    Abstract198)   HTML13)    PDF (1753KB)(87)      

    【Objective】Evaluate the adaptability and application value of germplasm resources, and to provide parents for the selection and breeding of new cotton varieties. 【Methods】The variation and correlation of agronomic traits and quality traits were studied by using 90 BT transgenic insect-resistant cotton as experimental materials, and principal component analysis and clustering analysis of 90 BT transgenic insect-resistant cotton were carried out with main agronomic traits and quality traits.【Results】The results of the analysis showed that there were significant differences in fiber quality and agronomic traits in the test materials. Among them, 44 were converted to BT gene cotton as early maturing materials, and 46 were converted to BT gene cotton as medium and early maturing materials. The first five principal component characteristic values were greater than 1, and the cumulative contribution rate reached 71.62%, the first principal component was related to cotton yield, the second principal component was related to fiber quality, and the third principal component was related to plant traits. 90 trans-BT cotton were divided into 4 groups by cluster analysis, and the sub-finger traits of group I showed good performance. Group II, the specific strength and elongation at break were good. Group III had higher boll number, boll weight and clothing score per plant. Group IV's fiber quality was better. 【Conclusion】18 parts of G21-2, G21-14, G21-1, G21-77 and other boll weights are selected from 90 transgenic cotton materials, all with a weight of more than 5.00 g, clothing content of more than 42%, and excellent comprehensive properties.

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    Effects of different types of salt and alkali stress on cotton seed germination
    DONG Zhiduo, XU Fei, FU Qiuping, HUANG Jian, QI Tong, MENG Ajing, FU Yanbo, Kaisaier Kuerban
    Xinjiang Agricultural Sciences    2024, 61 (8): 1831-1844.   DOI: 10.6048/j.issn.1001-4330.2024.08.002
    Abstract282)   HTML24)    PDF (2106KB)(85)      

    【Objective】 This study aims to investigate the influence and threshold of different types of saline-alkali stress on the germination of cotton seeds. 【Methods】 Four types of saline-alkali stress and seven concentration levels were simulated by Petri dish method. Cotton seeds of Xinluzhong 84, Tahe 2, Xinluzhong 40 and Jiumian 18 were used as research objects. The germination potential, germination rate, germination index, seed vigor index, fresh weight and dry weight of seedlings after germination were analyzed, salt tolerance threshold and membership function values were calculated, and comprehensive evaluation was carried out. 【Results】 (1) The germination potential, germination rate, germination index, vitality index, fresh weight and dry weight of cotton seed after germination showed a significant downward trend under the four types of saline-alkali stress. There was a significant negative correlation between saline-alkali concentration and all indexes, and the correlation between saline-alkali concentration and germination rate was more than -0.90. (2) The salt tolerance thresholds of cotton at germination stage were different under the four types of saline-alkali stress conditions. The salt tolerance thresholds under S1 stress ranged from 90.70 to 121.73 mmol/L. The salt tolerance threshold under S2 stress ranged from 82.68 to 128.30 mmol/L. The salt tolerance threshold under S3 stress ranged from 51.97 to 84.62 mmol/L. The salt tolerance threshold under S4 stress ranged from 73.49 to 98.21 mmol/L. (3) The salt tolerance of cotton seeds under four kinds of saline-alkali stress was analyzed by membership function and its order was Xinluzhong 84 > Xinluzhong 40 > Tahe 2 > Jiumian 18 under S1 stress, Xinluzhong 84 > Tahe 2 > Xinluzhong 40 > Jiumian 18 under S2 stress, and Tahe 2 > Xinluzhong 40 > Xinluzhong 84 > Jiumian 18 under S3 stress. It was found that the order of salt tolerance of cotton seeds under S4 stress was consistent with that under S2 stress. 【Conclusion】 The germination potential, germination rate, germination index and vigor index of cotton seeds are decreased under the four types of saline-alkali stress, and the fresh and dry weight of seedlings shows a downward trend with the increase of the concentration. The effect of alkaline salt on the germination of cotton seed is obviously greater than that of neutral salt.

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    Xinjiang Agricultural Sciences    2024, 61 (9): 0-0.  
    Abstract68)      PDF (25260KB)(74)      
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    Xinjiang Agricultural Sciences    2024, 61 (7): 0-0.  
    Abstract56)      PDF (16366KB)(72)      
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    Identification of salt tolerance of 197 upland cotton varieties at germination stage
    LIU Huijie, WANG Junhao, GONG Zhaolong, LIANG Yajun, WANG Junduo, LI Xueyuan, ZHENG Juyun, WANG Jichuan
    Xinjiang Agricultural Sciences    2024, 61 (7): 1574-1581.   DOI: 10.6048/j.issn.1001-4330.2024.07.002
    Abstract211)   HTML14)    PDF (795KB)(67)      

    【Objective】By identifying and evaluating the salt tolerance of upland cotton germplasm resources during the germination stage, this research can select good salt-tolerance germplasms.Based on this evaluation, the indicators of salt tolerance identification can be clarified, which provides theoretical support for the breeding improvement of upland cotton.【Methods】In this study, 197 varieties of upland cotton from both domestic and international sources were used as experimental materials.Salt stress treatments were administered at sodium chloride (NaCl) concentrations of 0 (as the control), 150, and 200 mmol/L.Nine parameters, including germination potential, rate, root length, and their relative measurements, were evaluated for the control and treatment groups.To assess the salt tolerance of these cotton varieties, a membership function method was applied, utilizing a comprehensive D-value for evaluation.【Results】The results indicated that a concentration of 150 mmol/L is ideal for determining salt tolerance in upland cotton during the germination stage.The coefficient of variation in the treatment group was consistently higher compared to the control group.A significant positive correlation was observed between the comprehensive D-value and the various traits of the treated plants.The comprehensive D-value as the primary factor.Based on a thorough evaluation, 4 materials were classified as highly salt-tolerant, 39 materials as salt-tolerant, 65 materials as moderately salt-tolerant, and 89 materials as salt-sensitive.【Conclusion】The study indicated that nine metrics, such as germination potential, germination rate, root length, and their respective relative values, are effective indicators for assessing salt tolerance.Among the tested materials, forty-three, including varieties 20N705 and C6524, demonstrated notably strong salt tolerance.

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    Effects of salt stress and re-watering on the physiology, biochemistry and microstructure of cotton leaf structure
    ZHAO Kang, CHENG Rongrong, PANG Bo, ZHANG Mengyuan, ZHANG Ru, WANG Yongpan, YANG Zhining, WANG Zhi, WANG Honggang, GAO Wenwei
    Xinjiang Agricultural Sciences    2024, 61 (10): 2351-2357.   DOI: 10.6048/j.issn.1001-4330.2024.10.002
    Abstract179)   HTML21)    PDF (957KB)(66)      

    【Objective】 To study the response mechanism of cotton seedlings in response to salt stress, and to provide experimental basis for the screening of salt-tolerant varieties of cotton. 【Methods】 Salt-tolerant and sensitive cotton seedlings were treated with 200 mM NaCl at the three-leaf stage, and the microstructures of cotton leaves were observed, and physiological and biochemical indexes were analyzed at 0, 48 h and 48 h of re-watering under NaCl treatment. 【Results】 Salt-tolerant and sensitive seedlings gradually softened their leaves and stalks under NaCl stress from 0-48 h. Sensitive seedlings withered and faded their cotyledons and slightly scorched the margins of the true leaves under NaCl treatment. The malondialdehyde concentration of cotton leaves was significantly elevated, and the chlorophyll content and the activity of superoxide dismutase were significantly reduced under NaCl treatment. After re-watering, both salt-tolerant and sensitive types were somewhat restored, malondialdehyde concentration was reduced, and chlorophyll content, superoxide dismutase activity and peroxidase activity were increased.Under salt stress conditions, leaf thickness, fenestrated tissue thickness and spongy tissue thickness of salt-tolerant and sensitive types decreased, and the SS type of sensitive material decreased more, and the difference was significant compared with normal conditions, but both materials recovered after re-watering, and the salt-tolerant material recovered better. 【Conclusion】 NaCl treatment for 48 h not only has an effect on the physiological and biochemical levels of cotton, but also induces the cellular activity of superoxide dismutase and oxidase activity. levels, but also induces structural changes in cells and tissues, and re-watering can effectively alleviate the physiological and biochemical levels of cotton under salt stress. Salt-tolerant materials have stronger salt tolerance and faster recovery after re-watering than sensitive materials.

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    Effects of nitrogen-dense interaction on growth, development, yield and quality of Gossypium barbadense L.
    ZHANG Chengjie, HU Haoran, DUAN Songjiang, WU Yifan, ZHANG Jusong
    Xinjiang Agricultural Sciences    2024, 61 (8): 1821-1830.   DOI: 10.6048/j.issn.1001-4330.2024.08.001
    Abstract230)   HTML17)    PDF (1279KB)(65)      

    【Objective】 The objective of this study is to study the regulatory effects of different nitrogen fertilizations and densities on the growth and development of cotton in the hope of providing a theoretical basis for rational dense planting and optimal nitrogen application of s Gossypium barbadense L. in the future. 【Methods】 Under the natural ecological conditions in southern Xinjiang, the effects of nitrogen-dense interaction on the growth, development, yield and quality of sea-island cotton were studied by using Xin 78 as the material and a two-factor experimental design, with two planting densities in the main area and four nitrogen application levels in the secondary area. 【Results】 The results showed that the plant height, stem diameter, number of fruit branches and the number of main stem leaves were positively correlated with nitrogen application rate, but negatively correlated with planting density. The SPAD value of leaves increased with the increase of nitrogen application rate and density during the whole growth period. The dynamic curves of dry matter accumulation of Gossypium barbadense L. under different treatments were in line with the logistic model, and the dry matter accumulation of D24N2 was the largest, reaching 22,462 kg/hm2, but the dry matter accumulation and distribution of D20N0 in the reproductive organs accounted for the largest proportion, reaching 72%. The number of boll per plant and the weight of each boll were positively correlated with nitrogen application rate, and negatively correlated with planting density, but the number of plants harvested per unit area was positively correlated with planting density, and the lint yield and seed cotton yield of D24N2 combination were the highest, which increased by 2,251.65 kg/hm2 and 774.77 kg/hm2, respectively compared with the lowest D24N0 combination. Planting density and nitrogen fertilization rate had no significant effect on the fiber quality of sea-island cotton. 【Conclusion】 Under the planting mode of machine picking cotton in southern Xinjiang, when the planting density is 240,000 plants/hm2 and the nitrogen application rate is 320 kg/hm2, the growth indexes of sea-island cotton performed well, and the lint yield is the highest, reaching 2,122.62 kg/hm2.

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    Establishment of genetic transformation and regeneration systems for different melon varieties and rapid acquisition of gene edited plants
    Kadierayi Maimaiti, ZHOU Tingting, HAN Sheng, Meilikehan Rexiti, Yushanjiang Maimaiti
    Xinjiang Agricultural Sciences    2024, 61 (7): 1666-1672.   DOI: 10.6048/j.issn.1001-4330.2024.07.013
    Abstract123)   HTML5)    PDF (990KB)(65)      

    【Objective】Study on establishment of genetic transformation and regeneration systems for different melon varieties and rapid acquisition of gene edited plants.【Methods】The cotyledons of four melon varieties, including Bawudun, Laohangua, Qiligan, and Xinmiza No. 11 (86-1).The sweet melon cotyledons were infected by Agrobacterium tumefaciens mediated method, and a genetic transformation and regeneration system of Laohan melon was established by tissue culture method and then genetically edited plants were obtained through PCR detection.【Results】The results showed that Laohan melon was selected as the dominant variety from four melon varieties as the explants. It was pre-cultured on MS+6-BA 1.0 mg/L+NAA 0.05 mg/L medium for 2 days and co-cultured for 3 days, then it was further cultured on MS+6-BA 1.0 mg/L+NAA 0.05 mg/L+hygromycin 5 mg/L+cephalosporin 250 mg/L screened medium for 7 days, after that, small buds were seen growing on MS+6-BA 1.0 mg/L+NAA 0.05 mg/L+hygromycin 5 mg/L+cephalosporin 250 mg/L adventitious bud induction medium for 1-2 weeks. The induced buds were placed on both non hygromycin and hygromycin added bud elongation medium for cultivation. It was found that the growth rate of the induced buds on the non hygromycin added bud elongation medium was faster than that on the hygromycin added medium, which shortened the growth of the buds to the two leaf seedling stage by 3 weeks. One bud DNA was cut off in a sterile environment and 21 transformed plants were examined by RT-PCR.【Conclusion】Gene edited plant buds were successfully selected on a shoot elongation medium with added hygromycin. The use of a shoot elongation medium without added hygromycin can shorten the time for obtaining gene edited plants by 3 weeks.

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    Effects of two application methods of insect-sand compound microbial agent on cotton growth and control of Verticillium wilt
    MENG Zhuo, TANG Xiaowen, ZHANG Guangjie, XU Andong, YAN Yu, FU Rao, QIANG Song, JIANG Pingan, MA Deying
    Xinjiang Agricultural Sciences    2024, 61 (12): 2861-2871.   DOI: 10.6048/j.issn.1001-4330.2024.12.001
    Abstract160)   HTML37)    PDF (2245KB)(64)      

    【Objective】 In order to explore the green control technology of cotton Verticillium wilt, the effects of two different application methods on cotton growth and control of verticillium wilt under the synergistic effect of Protaetia brevitarsis worm dung-sand and microbial agents will be clarified, in the hope of providing scheme reference for green control of the cotton disease and sustainable development of cotton industry.【Methods】 Four treatments of larvae dung-sand combined with Bacillus subtilis (LD-KC), Bacillus amyloliquefaciens (LD-JDF), Trichoderma harzianum (LD-HC) and Zhongmian Junletu (LD-ZM) were set up, and total base fertilizer of the larvae dung-sand combined with microbial agents (TBF) and base fertilizer of larvae dung-sand+dressing microbial agents (BF+DBM) were used respectively.【Results】 The growth and development indexes of cotton in BF+DBM group (plant height, stem diameter, first node of fruit branches, etc.) were better than those in TBF group, with LD-JDF and LD-ZM performing better. The yield increase of seed cotton in BF+DBM group was significantly higher than those in TBF group and control group (CK). The yield increase of seed cotton in BF+DBM group was 24.37%-33.40%. The highest yield increase was achieved in LD-JDF group (33.40%), followed by LD-HC (31.10%). In the early stage of Verticillium wilt, the disease index of TBF group was 3.80-5.85, the disease index of LD-JDF treatment was higher, reaching 44.36%, the disease index of BF+DBM group was 2.50-5.33, the disease index of LD-HC treatment was the lowest, and the prevention effect was 63.40%. In the late stage of Verticillium wilt, the disease indexes of TBF group and BF+DBM group were between 27.00-31.67 and 21.67-30.83, respectively, and JDF had the highest control effect, reaching 19.00% and 34.98% respectively.【Conclusion】 During the whole growth period of cotton, the basic application of larvae dung-sand combined with semi-quantitative biocontrol bacteria plus semi-quantitative biocontrol bacteria topdressing can effectively promote the growth and development of cotton, and has a good control effect on cotton Verticillium wilt, and the effect of increasing production is more obvious. LD-JDF has the best effect of increasing production, and base fertilizer of larvae dung-sand+dressing biocontrol microorganisms.

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    Effects of drought stress on foxtail millet yield and dry matter accumulation in different periods
    SHAO Jiang, ZHAO Yun, HU Xiangwei, LIU Jie, Nasirula Keremu, SHI Shubing, FENG Guojun
    Xinjiang Agricultural Sciences    2024, 61 (10): 2388-2395.   DOI: 10.6048/j.issn.1001-4330.2024.10.006
    Abstract159)   HTML18)    PDF (864KB)(61)      

    【Objective】 The objective of this project is to study the relationship between the growth and development of millet and dry matter accumulation under drought stress in different growth stages and to elucidate the effects of drought stress on the growth and yield of millet. 【Methods】 Three newly introduced millet varieties (lines) were used as experimental materials, and the water irrigation amount was artificially controlled, and drought stress treatment was carried out at different growth stages of millet to explore the changes of millet growth and yield traits under drought stress at different stages. 【Results】 (1) Drought stress had a significant effect on the agronomic traits of millet at heading stage, among which the plant height of 07607 decreased by 10.2%, the plant height and spike length of Nenxuan No. 10 decreased by 10.9% and 16.0%, respectively, and the spike length and stem base diameter of Baogu 22 decreased by 22.8% and 14.6%, respectively. (2) Drought stress at heading stage had significant effects on SPAD value, leaf area and dry matter accumulation of millet. (3) Drought at heading stage had a significant effect on plant growth and yield, and the yield was 19.6%, 37.5% and 18.4% lower than that of the control, respectively.Irrigation amount was significantly positively correlated with aboveground dry weight, biomass and yield at 0.001 level. (4) The drought resistance of different grain millet varieties (lines) was Baogu 22 > Ji 07607 > Nenxuan 10. 【Conclusion】 The heading stage is a sensitive period for millet to drought stress, and sufficient soil moisture should be ensured during this stage to ensure the increase of millet yield.

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    Effects of different nitrogen inhibitors on growth, nitrogen utilization and yield of cotton
    HUANG Boxuan, LI Pengcheng, ZHENG Cangsong, SUN Miao, SHAO Jingjing, FENG Weina, PANG Chaoyou, XU Wenxiu, DONG Helin
    Xinjiang Agricultural Sciences    2024, 61 (9): 2122-2131.   DOI: 10.6048/j.issn.1001-4330.2024.09.006
    Abstract146)   HTML10)    PDF (1383KB)(60)      

    【Objective】 To study the effects of different nitrogen inhibitors on the growth, development, nitrogen utilization, and yield of cotton when nitrogen fertilizer is added. The purpose is to determine the appropriate concentration of nitrogen inhibitors. 【Methods】 A pot experiment was conducted using 'China Cotton Research Institute 100' cotton plants. Under the same nitrogen application level, four types of nitrogen inhibitors, 3,4-dimethylpyrazole phosphate (DMPP), 2-chloro-6-trichloromethylpyridine (CP), dicyandiamide (DCD), and N-butylthiophosphoric triamide (NBPT) were added. And two different concentrations were used for each nitrogen inhibitor. The inhibitors were applied as base fertilizer and topdressing during the flowering period, along with urea. Cotton agronomic traits, biomass quality, nitrogen accumulation, lint cotton yield, and nitrogen fertilizer utilization were compared. 【Results】 Compared to the treatment with urea alone, the cotton plants treated with nitrogen inhibitors had a 6.5% to 16.8% increase in individual plant biomass quality during the flowering period, and a 8.8% to 33.0% increase in individual plant lint cotton yield. The apparent nitrogen fertilizer utilization rate increased by 4.5 to 15.1 percentage points. Among the treatments, cotton treated with 0.5% dicyandiamide (DCD), 0.25% 2-chloro-6-trichloromethylpyridine (CP), 1.0% 3,4-dimethylpyrazole phosphate (DMPP), and 0.5% N-butylthiophosphoric triamide (NBPT) added to urea showed better results in terms of biomass accumulation, nitrogen fertilizer utilization, and yield compared to cotton treated with 1.0% DCD, 0.5% CP, 2.0% DMPP, and 1.0% NBPT added to urea. 【Conclusion】 Cotton plants treated with 0.5% DCD added to urea have the highest individual plant biomass accumulation, and cotton treated with 0.25% CP added to urea shows better increases in cotton yield and nitrogen fertilizer utilization compared to other nitrogen inhibitors treatments.

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    Effects of straw returning and plastic film mulching on soil physical and chemical properties and spring maize yield in rain-fed upland farmland
    NIU Tingting, MA Mingsheng, ZHANG Jungao
    Xinjiang Agricultural Sciences    2024, 61 (8): 1896-1906.   DOI: 10.6048/j.issn.1001-4330.2024.08.009
    Abstract188)   HTML12)    PDF (1676KB)(60)      

    【Objective】 Study the effects of different straw returning methods and plastic film mulching on soil water and nutrient contents, yield and water use efficiency of spring maize (Zea mays L.) in arid areas in order to find out the effects of different straw returning methods on fertility and yield, and to seek a green and efficient way of straw utilization in the hope of providing scientific and technological support for high-quality agricultural development in arid areas of Northwest China. 【Methods】 A field experiment was conducted in Huining County, Gansu Province from 2019 to 2020, six treatments were set up, namely straw returning to the field without plastic film (CK), straw comminution returning to the field (SS), straw fermenting returning to the field (FS), straw returning to the field without plastic film mulching (Mk), straw comminution returning to the field + plastic film mulching (MS), and straw fermenting returning to the field + plastic film mulching (MFS), soil water content, water storage and water consumption, soil carbon, nitrogen, phosphorus and potassium, crop water use efficiency, dry matter accumulation and yield were measured. 【Results】 Under the two treatments of plastic film mulching, the water storage and water use efficiency of plough layer increased by 7.33%-16.29% and 10.73%-19.25%, respectively, the water storage and water use efficiency of plough layer increased by 6.39% and 7.38% compared with that of straw comminution. Plastic film mulching could further increase soil water storage and water use efficiency by 10.62%-16.29% and 13.88%-18.87%, respectively, and increase soil nutrient content, the contents of soil organic carbon, total nitrogen, available phosphorus and available potassium increased by 0.70%-8.03%, 1.63%-8.01%, 7.75%-13.86%, 9.19%-40.48% and 4.06%-10.62%, respectively. Compared with straw returning or film mulching, the dry matter quality and yield increased by 3.10%-15.35%, 11.02%-17.08%, 1.84%-12.81%, 8.94%-14.83%, respectively, the average was 12.04% and 10.08%. 【Conclusion】 Straw returning and plastic film mulching can improve soil water supply and fertilizer supply by regulating soil moisture and nutrients, and then promote the synchronous increase of crop dry matter accumulation and yield. The effect of MFS is better than that of MS, which was beneficial to the multiple objectives of drought resistance, fertilizer increase, efficiency increase and high yield of spring maize.

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    Effects of mixed salt stress on seed germination and seedling growth of peanut seed
    ZHANG Fan, CHEN Xiaolu, WANG Jie, HOU Xianfei, JIA Donghai, GU Yuanguo, MIAO Haocui, LI Qiang
    Xinjiang Agricultural Sciences    2024, 61 (9): 2168-2182.   DOI: 10.6048/j.issn.1001-4330.2024.09.011
    Abstract133)   HTML17)    PDF (1644KB)(59)      

    【Objective】 To investigate thoroughly the effects of mixed salt alkali stress on peanut seed germination and seedling growth in the hope of improving the planting structure of saline alkali land in Xinjiang and increasing the peanut planting area. 【Methods】 This study used Huayu 25 as the experimental material and artificially simulated mixed salt alkali stress conditions to determine the germination rate, germination potential, germination index, vitality index, salt damage rate, and root and stem length of peanut seedlings, in order to provide a basis for the effective utilization of saline alkali land and the cultivation of salt tolerant varieties. 【Results】 (1) Under high concentration stress, the mixed saline alkali solution composed of Cl- and SO42- has a more severe inhibitory effect on peanut seed germination; When the pH of the mixed saline alkali solution was greater than 10, the inhibitory effect on the growth of peanut seed primary seedlings was severer; (2) Different concentrations of mixed salt alkali stress had varying degrees of impact on germination rate, germination potential, germination index, vitality index, salt damage rate, root length, and stem length. High concentrations of mixed salt alkali would have an inhibitory effect on peanut seed germination; (3) The salt and alkaline tolerance of peanuts to each treatment was B>C>D>E>A in descending order. 【Conclusion】 Different mixed salt alkali components and concentrations have different effects on peanut seeds, and the seed germination period is the most sensitive period for plants to salt alkali stress.

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    Effects of microbial inoculants on growth and yield of winter wheat
    CHEN Fang, LI Zihui, WANG Bingyue, SUN Xiaogui, ZHANG Tingjun
    Xinjiang Agricultural Sciences    2024, 61 (8): 1853-1860.   DOI: 10.6048/j.issn.1001-4330.2024.08.004
    Abstract242)   HTML13)    PDF (847KB)(57)      

    【Objective】 To study the effects of microbial agent Junlintianxia on the wheat growth and yield and provide reference for the application of microbial agent in Xinjiang winter wheat. 【Methods】 Under the condition of field drip irrigation, wheat varieties Xindong 22, Xindong 52, Xindong 53 and Shidong 0358 were used to analyze the effects of no microbial agent Junlintianxia and microbial agent Junlintianxia on the growth and yield of winter wheat. 【Results】 The rate of emergence of wheat was slightly higher than that of the control or the same as that, the time of heading to maturity was slightly higher or the same, and the growth period was almost the same. The average plant height, tiller number and stem diameter increased 0.5 cm, 0.4 and 1.1 mm, respectively. The control effect of root rot was the best in No. 103 group (25.5%). The average weight per spike increased by 0.1g, the average number of grains per spike increased by 2.3 grains, the average yield per mu increased by 38.7 kg/667m2, and the yield per unit yield of the experiment field increased by 6%, higher than that of the control field. The average net increase was 111.4 yuan/667m2 compared with the control field. 【Conclusion】 The application of microbial agent (or Junlintianxia) has no obvious effect on the growth period of wheat, but has seedling preservation effect on winter wheat, which promotes wheat growth and development, has control effect on winter wheat diseases, and increasing effect on winter wheat yield.

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