CHEN Shu-qiang,DU Xiao-dong,YANG Li-min,et al.Effect of Lodging on Yield and Comparison of Different Varieties Lodging Resistance in Rice[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(10):34-37.[doi:10.11942/j.issn1002-2767.2015.10.0034]
水稻倒伏粒重损失及不同品种抗倒能力差异比较
- Title:
- Effect of Lodging on Yield and Comparison of Different Varieties Lodging Resistance in Rice
- 文章编号:
- 1002-2767（2015）10-0034-04
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 为了研究水稻倒伏对其产量的影响，选择抗倒伏能力强的品种以预防倒伏，利用黑龙江省第二、三积温带的主栽品种，研究了灌浆期水稻倒伏的粒重损失及不同品种的抗倒能力差异比较。结果表明：灌浆期倒伏发生日期越早、倒伏程度越大降低粒籽千粒重越多，灌浆中期完全倒伏植株与正常植株千粒重相比，垦稻12降低2.10 g，龙粳31降低1.06 g，在灌浆末期发生倒伏则对粒重影响不大。黑龙江省第二、三积温带抗倒性好的主栽品种有龙粳21、龙粳30、龙粳31、空育131、龙粳26、龙粳38、龙粳34、龙粳29等。抗倒伏品种的倒2节间长度相对较短，茎较粗；倒2节间的茎鞘干重、节间干重和茎壁干重较高，节间横切面积大，茎秆物理性状良好。
- Abstract:
- In order to study the effect of the rice lodging on yield and choose the varieties with lodging resistance capability,taking main rice cultivation varieties of the second and third accumulative temperature belts in Heilongjiang province as materials,the effect of lodging on rice grain weight loss at filling stage and difference comparison of different kinds of lodging resistance ability were studied.The results showed that the earlier date of lodging occurred at filling stage,the greater lodging score was,the more 1 000 grain weight reduced.Compared with normal rice plant at mid grouting,1 000 grain weight of complete lodging rice plant decreased 1.76 g(Kendao 12) and 1.07 g (Longjing 31) respectively.Lodging at late grouting had little effect on grain weight.Rice cultivation varieties with stronger lodging resistance in the second and third accumulative temperature belts in Heilongjiang province were Longjing 21,Longjing 30,Longjing 31,Kongyu 131,Longjing 26,Longjing 38,Longjing 34 and Longjing 29.Rice varieties with stronger lodging resistance had characteristic with relatively shorter 2nd internode length,thicker stems,higher 2nd internode stem sheath dry weight and dry weight of stem wall,larger internode crosscutting area ,and the physics properties of stem were well.
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备注/Memo
收稿日期：2015-07-30
基金项目：国家科技支撑计划资助项目（2011BAD16B11-02YJ01）；黑龙江省科技攻关重大资助项目（GA13B101）；黑龙江省农业科学院青年基金资助项目（QN019）；佳木斯市人才资助项目（201501）
第一作者简介：陈书强(1976-)，男，黑龙江省阿城市人，博士，副研究员，从事水稻高产高效优质栽培研究。E-mail:chenshuqiang@163.com。