新疆农业科学 ›› 2022, Vol. 59 ›› Issue (4): 797-809.DOI: 10.6048/j.issn.1001-4330.2022.04.003

• 作物遗传育种·分子遗传学·耕作栽培·种质资源 • 上一篇    下一篇

不同灌水量和密度对无膜棉光合特性及产量的影响

李同蕊(), 高振, 王冀川(), 石元强, 刘强, 周相, 陈雪梅, 王振洋   

  1. 塔里木大学植物科学学院,新疆阿拉尔 843300
  • 收稿日期:2021-07-12 出版日期:2022-04-20 发布日期:2022-04-24
  • 通信作者: 王冀川
  • 作者简介:李同蕊(1997-),女,宁夏银川人,硕士研究生,研究方向为作物生理,(E-mail) 1335801071@qq.com
  • 基金资助:
    南京农业大学-塔里木大学联合基金“南疆机采无膜棉高效促控平衡栽培基础与技术”(NNLH201903);兵团师域发展创新支持计划“棉田地膜污染农艺治理关键技术研究与示范”(2017NYGG07);兵团第三师图木舒克市科技计划“棉田减肥减药关键技术研究与示范”(YJ2019CX05)

Effects of Different Irrigation Amounts and Densities on Photosynthetic Characteristics and Yield of Membrane-Free Cotton

LI Tongrui(), GAO Zhen, WANG Jichuan(), SHI Yuanqiang, LIU Qiang, ZHOU Xiang, CHEN Xuemei, WANG Zhenyang   

  1. College of Plant Science, Tarim University, Alar Xinjiang 843300, China
  • Received:2021-07-12 Online:2022-04-20 Published:2022-04-24
  • Correspondence author: WANG Jichuan
  • Supported by:
    Nanjing Agricultural University & Tarim University Joint Fund Project "The Basis and Technology of High Efficiency, Promoting and Controlling Balanced Cultivation of Machine-Picked Non-Film Cotton in Southern Xinjiang"(NNLH201903);Division Area Development Innovation Support Program Project of XPCC " Key Technology Research and demonstration of Cotton Field Plastic Film Pollution Control"(2017NYGG07);Tumushuke Science and Technology Project of the Third Division "Research and Demonstration on Key Technology of Reducing Chemical Fertilizer and Pesticide in Cotton Field"(YJ2019CX05)

摘要:

【目的】研究灌水量和种植密度对滴灌无膜棉光合特性和产量的影响。【方法】以“中619”为供试材料,设置两因素裂区田间试验,其中灌水量为主区,分别为3 000 m3/hm2(W1)、4 500 m3/ hm2(W2)和 6 000 m3/ hm2 (W3);密度为副区,分别为29.24×104株/hm2(M1)、26.32×104株/hm2(M2)、23.92×104株/hm2(M3)和21.93×104株/hm2(M4),分析无膜棉群体叶面积指数(LAI)动态、光合指标变化及产量差异特征。【结果】盛花期是无膜棉LAI及光合功能最大期,随密度和灌水量增加,LAI增加, W2M3处理的LAI变化较平稳,后期LAI较高,W3M1处理LAI表现最高,但盛花期后下降速度快;适宜灌水及合理密度有利于叶片光合功能提高,其中盛花期W2M3、W2M4和W3M3处理的PnGsTr较高,Ci较低,且日变化中的光合“午休”不明显,其最大值分别为29.1032.15 μmolCO2/(m2·s)、0.911.07 mol/(m2·s)、12.7813.87 mmolH2O/(m2·s)和112.1131.0 μmolCO2/(m2·s),产量达6 890.717 496.79 kg/hm2的较高水平。W3M4处理的LAI及光合指标虽然较高,但后期下降过快,而W1M1各项指标均表现最低,灌水及密度过高或过低均不利于叶片光合功能的提高;灌水量与密度对叶片生长及光合指标的影响具有互作效应,且密度效应高于水分效应。【结论】较适宜的灌水量及种植密度范围为4 500 6 000 m3/hm2和21.93×104 23.62×104株/hm2,当灌水量5 034.73 m3/hm2、种植密度24.63×104株/hm2时的产量最高为7 508.82 kg/hm2

关键词: 灌水量; 密度; 无膜棉; 光合特性; 产量构成

Abstract:

【Objective】 To study the effects of irrigation amount and planting density on photosynthetic characteristics and yield of drip irrigation membrane-free cotton.【Method】 Field tests designed by the two-factor split zone were carried out with "medium 619" as the test material, the main area was irrigation amount, which was 3,000 m3/hm2 (W1), 4,500 m3/hm2 (W2) and 6,000 m3/hm2 (W3), respectively; the sub-area was density, which was 29.24×104/hm2(M1), 26.32×104/hm2 (M2), 23.92×104/hm2 (M3) and 21.93×104/hm2 (M4), respectively, to study the dynamics of membrane-free cotton population leaf area index (LAI), photolysis indicators and yield differences.【Results】 Full-blooming stage was the maximum period of filmless cotton LAI and photolysis function, and the LAI increased with density and irrigation amount.The LAI change of W2M3treatment was more stable and higher in the later stage.The LAI of W3M1 treatment was the highest, but it decreased rapidly after the full flowering stage.Suitable irrigation and reasonable density were beneficial to the improvement of photosynthetic function of leaves.The treatments W2M3, W2M4 and W3M3 had higher Pn, Gs and Tr and lower Ci at full flowering stage, and the diurnal photosynthetic "midday depression" was not obvious, and its maximum values were 29.10-32.15 μmolCO2/(m 2·s), 0.91-1.07 mol/(m2·s), 12.78-13.87 mmolH2O /(m2·s) and 112.1-131.0 μmolCO2/mol, respectively, and the yield reached a high level of 6,890.71-7,496.79 kg/hm2.Although the LAI and photosynthetic index of W3M4 treatment were higher, they decreased too fast in the later stage, while the W1M1 showed the lowest, indicating that too high or too low irrigation and density were not conducive to the improvement of photosynthetic function of leaves.The effects of irrigation amount and density on leaf growth and photosynthetic index had interaction effect, and the effect of density was higher than that of water.【Conclusion】 Through analysis, the suitable irrigation amount and planting density in this region are 4,500-6,000 m3/hm2 and 21.93×104-23.62×104/hm2.The highest yield is 7,508.82 kg/hm2 when the irrigation amount is 5,034.73 m3/hm2 and the planting density is 24.63 × 10 4 /hm2.

Key words: irrigation amount; density; membrane-free cotton; photosynthetic characteristics; yield compositions

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
地址:乌鲁木齐市南昌路403号新疆农业科学院
邮编:830091
电话:0991-4502046
E-mail:xjnykx-h@xaas.ac.cn


版权所有 © 《新疆农业科学》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发
总访问量: 今日访问: 在线人数:
网站
微信公众号
淘宝购买
微店购买