[1]梁建秋,于晓波,吴海英,等.密度及烯效唑喷施对套作大豆南夏豆25抗倒性及产量的影响[J].大豆科学,2017,36(01):33-40.[doi:10.11861/j.issn.1000-9841.2017.01.0033]
　LIANG Jian-qiu,YU Xiao-bo,WU Hai-ying,et al.Impact of Density and Uniconazole on Stem Lodging Resistance and Yield of Inter-planting Soybean Cultivar Nanxiadou 25[J].Soybean Science,2017,36(01):33-40.[doi:10.11861/j.issn.1000-9841.2017.01.0033]
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密度及烯效唑喷施对套作大豆南夏豆25抗倒性及产量的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第36卷 期数: 2017年01期 页码: 33-40 栏目: 出版日期: 2017-01-20
Title:
Impact of Density and Uniconazole on Stem Lodging Resistance and Yield of Inter-planting Soybean Cultivar Nanxiadou 25
作者:
梁建秋; 于晓波; 吴海英; 冯军; 刘国林; 张明荣
南充市农业科学院/国家大豆产业技术体系南充综合试验站，四川 南充 637000
Author(s):
LIANG Jian-qiu;  YU Xiao-bo;  WU Hai-ying;  FENG Jun;  LIU Guo-lin;  ZHANG Ming-rong
Nanchong Academy of Agricultural Sciences/Nanchogn Station of China Soybean Industrial Technology System, Nanchong 637000, China
关键词:
套作; 密度; 化控处理; 茎秆抗倒性; 产量
Keywords:
Inter-planting;  Population density;  Chemical treatments;  Stem lodging resistance;  Yield
DOI:
10.11861/j.issn.1000-9841.2017.01.0033
文献标志码:
A
摘要:
为探寻玉米-大豆带状套作模式下套作专用高蛋白品种南夏豆25的适宜密度和栽培措施，设置10万，12万，18万，24 万株·hm-2共4个密度梯度，并于分枝期用烯效唑75 mg·kg-1对不同密度材料进行化控处理，研究不同密度及化控和不化控条件下的主要农艺性状情况。结果表明：随着大豆密度增加，大豆株高、重心高、第一节间长、长粗比等茎秆纵向生长特性指标均显著增加，而基部节间粗度则显著下降；对化控和不化控的比较发现，化控能够显著抑制由于密度增大引起的重心高增加和基部节间伸长的不足，同时增加基部节间粗，增强植株的抗倒性。化控与不化控处理的大豆单株产量构成因素均随着密度的增加而下降，而群体产量则呈先升后降的趋势，但是二者均以密度18 万株·hm-2的产量最高，化控处理能够显著提高作物产量。以上研究结果表明，针对南夏豆25的生长特性，在生产过程中应通过适度增加密度（18万株·hm-2）并结合一定的化学控制策略来增强植株的抗倒性从而达到大豆产量的提高。
Abstract:
Nanxiadou 25 is a suitable inter-planting soybean cultivar with high protein content. In order to clarify the ideal population density and cultivated measures of Nanxiadou 25, 4 population density,including 100 000, 120 000, 180 000 and 240 000 plants·ha-1 were set. The plots were sprayed with 75 mg·kg-1 uniconazole during the branching stage, and investigated some mainly agronomic traits. Results showed that the plant height, stem height of gravity center, length of the first internode, ratio between length and diameter, were significantly increased with the increasing of population density, but diameter of the first stem internode decreased significantly. The chemical treatment with spraying uniconazole could inhibit the increase of stem height, length of the first stem internode, because the increase of population density and increase diameter of the first stem internode could improve the lodging resistance. In addition, the yield components per plant all decreased with the increase of population density under chemical treatment or none. The plot yield showed a trend of first increased and then decreased with the increase of population density under chemical treatment, with the highest yield in the density of 180 000 plants·ha-1. These results showed that, chemical treatment could significantly increase crop yield. Therefore, suitable density (180 000 plants·ha-1) and rational chemical treatments could enhance the lodging resistance and yield of Nanxiadou 25.

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备注/Memo

基金项目：国家现代农业产业技术体系（CARS-04-CES25）；现代农业产业技术体系四川区域创新团队（四川省农业厅资金支持）。第一作者简介：梁建秋(1983-)，女，硕士，助研，主要从事大豆育种与栽培研究工作。E-mail：liangjianqiu142@163.com。

更新日期/Last Update: 2017-03-14