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多效唑是一种高活性植物生长调节制,它能强烈地抑制植物体内赤霉素的生物合成,延缓作物生长,近年来已广泛应用于水稻、小麦、油菜、花生、大豆等作物。特别是在杂交水稻制种上的应用,多效唑更是以其独特的功能被人们逐步接受。根据各地资料介绍,结合笔者制种实践,现按不同的用药时间将多效唑在杂交水稻制种上的应用方法及其作用分别介绍如下: 1 浸种至幼苗期 此段时间用药,主要目的是培育矮壮蘖秧,增穗增粒,节省用种。但同时伴有分蘖提早、抽穗推迟的趋势,安排错期时应予注意。一般在对父母本同时施药的基
Paclobutrazol is a highly active plant growth regulator, which can strongly inhibit the gibberellin biosynthesis in plants and delay the growth of crops. It has been widely used in rice, wheat, rapeseed, peanut and soybean crops in recent years. Especially in the hybrid rice seed production application, paclobutrazol is its unique function is gradually accepted by people. According to the introduction of various localities and the author’s practice of seed production, the application methods and their functions of paclobutrazol in hybrid rice seed production are described as follows: 1. The seed is soaked in this seedling period, the main purpose is to cultivate short Strong tillering seedlings, by the ear by grain, save the use of species. But at the same time accompanied by early tillering, heading of the trend of postponing should pay attention to the wrong time. Generally in the parents of the base at the same time