冬小麦不同生育期受涝对其生长和产量的影响

发布时间：2018-04-23 20:09

本文选题：淹水 + 冬小麦　；参考：《灌溉排水学报》2017年10期

【摘要】：以当地小麦品种新原958为对象,在孕穗期和灌浆期分别进行1、3、5和7 d的淹水处理,并以当地常规灌溉处理为对照(CK)在测坑中进行受涝试验,观察和分析了涝害对冬小麦生长和产量的影响。结果表明,孕穗期和灌浆期淹水处理对小麦叶绿素、灌浆速率和产量有一定的抑制作用,且随着淹水历时的增加,抑制作用越明显。与CK相比,孕穗期淹水7 d(wb7)处理的叶绿素显著降低了16.64%,籽粒灌浆速率降低了95.02%,产量降低29.6%,千粒质量降低了6.15%;灌浆期淹水7 d(wg7)处理的产量较CK减产25.9%。孕穗期和灌浆期淹水处理都会造成小麦减产,尤其是孕穗期淹水处理。因此,在小麦生产的日常管理中,应及时采取排水措施,以免造成小麦减产。
[Abstract]:The local wheat variety Xinyuan 958 was treated with flooding at booting stage and grain filling stage for 1 and 7 days, respectively. The waterlogging test was carried out in the pit with local routine irrigation treatment as control. The effects of waterlogging on the growth and yield of winter wheat were observed and analyzed. The results showed that flooding at booting stage and grain filling stage inhibited wheat chlorophyll, grain filling rate and yield to a certain extent, and the inhibition was more obvious with the increase of flooding duration. Compared with CK, the chlorophyll content, grain filling rate, grain yield and grain weight were significantly decreased by 16.64%, 95.02%, 29.6%, 6.15% and 25.9% respectively. Flooding at booting stage and grain filling stage can cause wheat yield reduction, especially in booting stage. Therefore, in the daily management of wheat production, drainage measures should be taken in time to avoid wheat production reduction.
【作者单位】：中国农业科学院农田灌溉研究所;河南商丘农田生态系统国家野外科学观测研究站;
【基金】：“十二五”公益性行业(农业)科研专项经费资助项目(201203077,201203032) 中国农业科学院创新工程项目
【分类号】：S422;S512.11

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