北方农业学报 ›› 2020, Vol. 48 ›› Issue (4): 10-17.doi: 10.12190/j.issn.2096-1197.2020.04.02

• 作物栽培·生理生化 • 上一篇    下一篇

播种期对直播稻茎秆抗倒伏性状的影响

徐波, 王宝祥, 杨波, 陈庭木, 邢运高, 孙志广, 刘艳, 卢百关, 徐大勇   

  1. 连云港市农业科学院,江苏 连云港 222002
  • 收稿日期:2020-06-17 出版日期:2020-08-20 发布日期:2020-10-23
  • 通讯作者: 徐大勇(1964—),男,研究员,博士,主要从事水稻遗传育种的研究工作。
  • 作者简介:徐 波(1989—),男,助理研究员,硕士,主要从事水稻遗传育种的研究工作。
  • 基金资助:
    连云港市财政专项支持项目(QNJJ1713); 国家现代农业技术体系建设专项资金资助项目(CARS-01-61); 高产优质多 抗耐盐(碱)水稻新种质创制项目(BE2016370-3); 江苏省科技支撑项目(重点研发)(BE2018337); 连云港市财政专项支持项目(QNJJ1912)

Effect of sowing date on the stem lodging resistance in direct seeding rice

XU Bo, WANG Baoxiang, YANG Bo, CHEN Tingmu, XING Yungao, SUN Zhiguang, LIU Yan, LU Baiguan, XU Dayong   

  1. Lianyungang Academy of Agricultural Sciences,Lianyungang 222002,China
  • Received:2020-06-17 Online:2020-08-20 Published:2020-10-23

摘要: 【目的】 明确不同播种期直播稻茎秆主要性状表现及其与抗倒伏性状的相关性,为直播稻抗倒伏育种提供参考。【方法】 以水稻中熟中粳品种连粳7号、徐稻3号和早熟中粳品种连粳15号、连粳13ZJ61为试验材料,设置6月10日、6月20日、6月30日3个播种期,研究播种期对直播稻地上部分生长动态及产量的影响,并对茎秆性状与植株抗倒伏性状进行相关性分析。【结果】 4个品种的产量构成要素及实收产量均随播种期的推迟而降低,但下降程度不一;随着播种期的推迟,茎秆抗折力降低、弯曲力矩减小、穗长显著减小、株高显著降低、基部节间单位节间干重减小,单株抗倒力也随之减弱。不同品种地上部分抗倒伏力与节间长度、茎秆干重和单位节间干重关系密切。【结论】 提早播种期(6月10日),直播稻第1、第2节间短,茎秆干重大、充实度好,有利于直播稻抗倒伏力的提高。

关键词: 直播稻, 播种期, 抗倒伏, 茎秆性状

Abstract: 【Objective】 To determine the performance of stem related characters in direct seeding rice and their relationship with lodging resistance under different sowing dates,to provide reference for lodging resistance breeding in direct seeding rice.【Methods】 Lianjing7, Xudao3(Medium-maturing medium Japonica Rice)and Lianjing15,Lianjing13ZJ61(Early-maturing medium Japonica Rice)were used as experimental materials,three sowing dates were set on June 10,June 20 and June 30.The effects of sowing date on the growth dynamics of the above ground and yield in direct seeding rice were studied,and the correlation between the stem characters and the lodging resistance in rice plants were analyzed.【Results】 The yield components and actual yield of four varieties all decreased with the delay of sowing date,but the degree of decline was different.With the delay of sowing date,the bending resistance of stem and the bending moment decreased,the spike length and the plant height significantly decreased,the dry weight per unit internode of basal internode and the anti-overturning force per plant also decreased.The lodging resistance of different varieties was closely related to internode length,stem dry weight and dry weight per unit internode.【Conclusion】 Early sowing(June 10),shorter for the first and second internodes,its stem with high dry weight and plumpness,was conducive to lodging resistance for direct seeding rice.

Key words: Direct seeding rice, Sowing date, Lodging resistance, Stem traits

中图分类号: 

  • S511