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中国农学通报 ›› 2015, Vol. 31 ›› Issue (18): 46-51.doi: 10.11924/j.issn.1000-6850.casb14120152

所属专题: 玉米 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

干旱胁迫对夏玉米不同品种茎杆力学特性的影响

夏来坤1,刘京宝1,朱卫红1,薛华政1,谷利敏1,李新泽2,黄 璐1,乔江方1,李 川1,郭国俊1   

  1. (1河南省农业科学院粮食作物研究所,郑州 450002;2西华县农业科学研究所,河南西华 466600)
  • 收稿日期:2014-12-23 修回日期:2015-06-03 接受日期:2015-02-10 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 刘京宝
  • 基金资助:
    公益性行业(农业)科研专项项目“主要农作物抗御季节性干旱技术研究与示范”(201203031);十二五粮丰工程项目“黄淮南部(河南)小麦玉米两熟持续丰产高效技术集成创新与示范”(2011BAD16B07);河南省财政支持农业科技创新项目“水氮互作对高产夏玉米群体产量的影响”(201315617);作物生物学国家重点实验室开发课题“不同密度下夏玉米茎秆抗倒特性及氮肥调控研究”(2015KF02)。

Stalk Mechanical Characteristics of Different Summer Maize Varieties and Its Response to Drought Stress

Xia Laikun1, Liu Jingbao1, Zhu Weihong1, Xue Huazheng1, Gu Limin1, Li Xinze2, Huang Lu1, Qiao Jiangfang1, Li Chuan1, Guo Guojun1   

  1. (1Cereal Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002; 2Institute of Agricultural Sciences of Xihua, Xihua Henan 466600)
  • Received:2014-12-23 Revised:2015-06-03 Accepted:2015-02-10 Online:2015-07-27 Published:2015-07-27

摘要: 为研究干旱胁迫对夏玉米不同品种茎杆力学特性的影响,从茎杆力学特性角度探讨夏玉米品种的抗旱能力,以8个河南省主栽夏玉米品种为材料,比较干旱胁迫对茎杆抗折力、压碎强度、穿刺强度等抗倒力学指标的影响。结果表明,茎杆抗倒力学特性受干旱胁迫影响显著,平均下降15%~30%;受旱胁迫后,各品种茎杆抗折力、压碎强度、穿刺强度平均下降了26.1%、18.9%和16.8%;品种间差异明显,‘洛玉8号’、‘郑单958’降幅较小,而‘蠡玉16’、‘中科4号’降幅较大。研究结果表明‘洛玉8号’和‘郑单958’抗旱能力较强,而‘中科4号’和‘蠡玉16’抗旱能力较弱。

关键词: 三明市, 三明市, 水稻新品种, 影响因素, 列联表分析, Logistic回归分析

Abstract: In order to study the effect of drought stress on the stalk mechanical characteristics of different summer maize varieties and discuss the drought resistance ability of different summer maize varieties from the angle of stalk mechanical characteristics, the author used 8 main summer maize cultivars in Henan and analyzed the effects of drought stress on stalk break strength, stalk crushing strength and puncture strength. The results showed that drought stress had significant effect on stalk lodging resistance and the lodging resistance declined 15%-30% under drought stress. After drought stress, the stalk break strength, stalk crushing strength and puncture strength of different varieties averagely decreased 26.1%, 18.9% and 16.8%, respectively. Meanwhile, obvious differences existed among varieties, the average reduction of ‘Luoyu 8’ and ‘Zhengdan 958’ was smaller and that of ‘Liyu 16’ and ‘Zhongke 4’ was bigger. The research results showed that the drought resistance of ‘Luoyu 8’ and ‘Zhengdan 958’ was stronger and that of ‘Zhongke 4’ and ‘Liyu 16’ was weaker.