矮壮素、矮健素有防止小麦倒伏的作用,高产小麦田如果需要喷施这些物质,那么在什么时期喷施最合适呢?对于这个问题,各地的看法和做法都有不同。如有的认为,在小麦起身一拔节期之间使用比较合适,也有的主张在起身期使用,有的则主张在拔节期使用,甚至有的在返青期或孕穗期也使用。为了正确地掌握使用矮壮素、矮健素的时期,以达到最好的防倒及高产效果,我们根据自己的生产实践和科学实验谈一点看法,供大家参考。在谈这个问题之前,我们必须了解一下高产小麦倒伏的主要原因是什么。据观察高产小麦的茎倒伏(而不是根倒伏),主要是由于起身拔节期小麦植株在不合适的栽培措施条件下(如 Chlormequat, dwarf elements have the effect of preventing wheat lodging, high yield wheat fields if the need to spray these substances, then at what time the best spray it? For this issue, all over the views and practices are different. Some people think that it is more appropriate to use wheat during the period when they get up, some advocate that they are used at the beginning of their life, while others advocate that they are used at the jointing stage or even during the returning or booting stages. In order to correctly grasp the use of CCC, dwarf elements in the period, in order to achieve the best anti-down and high-yield effect, according to our own production practices and scientific experiments to talk about some ideas for your reference. Before talking about this issue, we must understand what is the main reason for the lodging of high-yielding wheat. It has been observed that stem lodging (rather than root lodging) in high-yielding wheat is mainly due to improper cultivation practices of wheat plants that rose at jointing stage