在“农业学大寨”运动推动下,我们公社的农业生产有了很大发展,两杂种植面积不断扩大。两杂制种也由原来分散、小面积的形式改变为集中、大面积的制种。这样,既减少了隔离区,便于安排,又利于健全繁种体系,改进制种技术,提高种子质量。几年来,在杂交高梁制种实践中,对如何解决小花败育、花期相遇和辅助授粉等问题,我们有以下几点体会: 1.花期降低土壤含水量,保证制种稳产多年制种结果说明:高粱制种能不能实现高产稳产,首先取决于小花败育的轻重,而小花败育的关键在于花期雨量多少和土壤含水量高低。同样的降水 Driven by the “Agriculture Studies in Dazhai” Campaign, the agricultural production in our commune has greatly developed and the area under cultivation has grown. Two hybrid seed production from the original scattered, small-scale changes in the form of concentrated, large-scale seed production. In this way, not only the isolation zone is reduced, the arrangement is convenient, the breeding system is also improved, the seed production technique is improved, and the seed quality is improved. In recent years, in the practice of hybrid sorghum seed production, we have the following experience on how to solve the problems of abortion, flowering and auxiliary pollination: 1. Flowering reduces soil moisture to ensure stable seed production. Sorghum seed production can achieve high and stable yield, first of all depends on the floret abortion weight, and the key to the floret abortion is how much flowering and soil moisture levels. The same precipitation