倒伏是小麦高产的一个严重障碍。关于倒伏的原因及其对产量的影响,已有不少报告。一般倒伏多发生在齐穗至灌浆阶段,但在生产实践中部分田块的倒伏会于抽穗前20多天发生。倒伏时期不同,减产的程度及原因亦不尽相同。以往关于不同时期倒伏对产量及产量构成的影响,特别是对小麦干物 Lodging is a serious obstacle to high-yielding wheat. There have been many reports on the causes of lodging and their impact on production. Generally lodging occurred in the heading stage to the filling stage, but in practice, the lodging of some fields would occur more than 20 days before heading. The period of lodging is different, and the extent and reasons for the reduction in production are also different. In the past on the lodging of different periods on the impact of yield and yield components, especially wheat dry matter