Effects of Planting Density on Plant Characters, Ear Characters and Yield in Maize

doi:10.6048/j.issn.1001-4330.2022.02.009

Xinjiang Agricultural Sciences ›› 2022, Vol. 59 ›› Issue (2): 337-343.DOI: 10.6048/j.issn.1001-4330.2022.02.009

• Crop Genetics and Breeding·Molecular Genetics·Cultivation Physiology·Germplasm Resources • Previous Articles Next Articles

Effects of Planting Density on Plant Characters, Ear Characters and Yield in Maize

DANG Genyou¹(), LI Xin¹^,²(), GUAN Yajing², ZHU Yongxing², LUO Xiangning¹, ZHANG Wenbo³, WANG Zhaochuan³

1. Crop Research Institute of Ningxia Agriculture and Forestry Sciences, Yongning Ningxia 750105,China
2. Agricultural Bio-technology Research Center Ningxia Agriculture and Forestry Sciences, Yinchuan Ningxia,750002,China
3. Ningxia Ketai Technology Seed Industry Co., Ltd., Yongning Ningxia 750105, China

Received:2021-01-08 Online:2022-02-20 Published:2022-03-22
Correspondence author: LI Xin
Supported by:
Ningxia Natural Science Foundation Project(2019AAC03155);Scientific and technological innovation pilot project of Ningxia Academy of agricultural and Forestry Sciences(NKYJ-19-01);Scientific and technological innovation pilot project of Ningxia Academy of agricultural and Forestry Sciences(QCYL-2020-YY-1-4);Ningxia young science and technology talent promotion project(TJGC2018081);Ningxia young science and technology talent promotion project foreign cooperation project of Ningxia Academy of agriculture and Forestry Sciences(DW-X-2020002);Ningxia Academy of agricultural and forestry sciences achievements transformation project(NNKZZCGZH-2020-13)

密度对玉米穗部性状及产量的影响

党根友¹(), 李新¹^,²(), 关雅静², 朱永兴², 罗湘宁¹, 张文博³, 王兆川³

1.宁夏农林科学院农作物研究所宁夏永宁 750105
2.宁夏农林科学院农业生物技术研究中心,宁夏银川 750002
3.宁夏科泰科技种业有限公司宁夏永宁 750105

通讯作者: 李新
作者简介:党根友(1983-),男,陕西富平人,助理研究员,硕士,研究方向为作物高效栽培和玉米育种,(E-mail) danggenyou@163.com
基金资助:
宁夏自然科学基金(2019AAC03155);宁夏农林科学院科技创新先导项目(NKYJ-19-01);宁夏农林科学院科技创新先导项目(QCYL-2020-YY-1-4);宁夏青年科技人才托举工程项目(TJGC2018081);宁夏农林科学院对外合作项目(DW-X-2020002);宁夏农林科学院成果转化项目(NNKZZCGZH-2020-13)

Abstract

Abstract:

【Objective】 To carry out field experiments by using spring maize cultivar Ningdan 41, Ning 1530, Ningyu 51, Xianyu 335, and four planting density treatments including D₁(82,500 plants/hm²), D₂(90,000 plants/hm²), D₃(97,500 plants/hm²) and D₄(105,000 plants/hm²) were designed. 【Methods】 The influence off our planting density treatments on ear characters and yield were analyzed. 【Result】 The results showed that with the increase of planting density,the bald tip length of ear characters were increased, while 11 ear characters (measured all ear characters except bald tip length) were decreased; The results also showed that the average coefficient of variation of each maize variety was bald tip length, 100 grain weight at the top of ear and the number of grains per row was highest, while the average coefficient of variation of row number per ear, ear diameter and seed yield rate was the smallest; the variation range of 100 grain weight in the upper ear was greater than that in the middle and lower part of ear; the decreasing range of grain number per row in long ear varieties was larger than that in middle and short ear varieties, and it was the most obvious when the density was above 97,500 plants /hm². 【Conclusion】 With the increase of planting density, the number of effective panicles increased, while the number of grains per spike and 1,000 grain weight decreased significantly, the yields of Ning1530 and Ningyu 51 were the highest at the planting density of 10,5000 plants/hm², and the yields of Ningdan 41 and Xianyu 335 were the highest at the planting density of 97,500 plants/hm².

Key words: maize; density; ear characters; yield

摘要：

【目的】 分析密度对玉米穗部性状及产量的影响,为灌区春玉米品种选择与增密增产提供理论依据及技术参考。【方法】 以玉米品种宁单41号、宁1530、宁玉51号、先玉335为试验材料,设置82 500、90 000、97 500和105 000 株/hm²4种密度处理,分析密度对穗部性状及籽粒产量的影响。【结果】 随着密度的增加,穗部性状的秃尖长度增加,而除秃尖长度外的11个穗部性状指标降低;密度增加下各品种玉米的平均变异系数表现为秃尖长度、穗上部的百粒重、行粒数最大,而穗行数、穗粗、出籽率平均变异系数最小;增密下穗上部百粒重变化幅度大于穗中部、穗下部;行粒数降低幅度长穗品种大于中短穗品种,在密度97 500 株/hm²以上时表现最明显。【结论】 随着种植密度增加,增加了有效穗数,而穗粒数和千粒重明显降低;宁玉51号、宁1530在105 000 株/hm²密度下产量最高,先玉335、宁单41号在97 500 株/hm²密度下产量最高。

关键词: 玉米, 密度, 穗部性状, 产量

CLC Number:

S513.047

DANG Genyou, LI Xin, GUAN Yajing, ZHU Yongxing, LUO Xiangning, ZHANG Wenbo, WANG Zhaochuan. Effects of Planting Density on Plant Characters, Ear Characters and Yield in Maize[J]. Xinjiang Agricultural Sciences, 2022, 59(2): 337-343.

党根友, 李新, 关雅静, 朱永兴, 罗湘宁, 张文博, 王兆川. 密度对玉米穗部性状及产量的影响[J]. 新疆农业科学, 2022, 59(2): 337-343.

Figures/Tables 3

References 24

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Effects of Planting Density on Plant Characters, Ear Characters and Yield in Maize

密度对玉米穗部性状及产量的影响

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