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玉米杂交种的纯度直接影响着玉米杂交种的增产效果。影响玉米杂交种种子纯度的原因很多,主要原因是玉米制种时去雄不及时、不严格。为了解决杂交种的纯度问题,我大胆地革新了去雄方法,即强制限期去雄,经过9年的试验、示范、推广、应用,收到了良好效果。一、新去雄法设计我们在制种实践中,发现部分杂交制种组合母本旗叶还没完全伸展,雄穗将伸出或在旗叶内就开始散粉(特别制京早7号,如遇干旱,表现更为突出)。这种现象往往不被人们发觉,也不引起制种
The purity of maize hybrids directly affects the yield increase of maize hybrids. There are many reasons that affect the purity of corn hybrid seeds, the main reason is that the maize seed when the male is not timely, not strict. In order to solve the problem of purity of hybrids, I have boldly innovated the method of removing male, that is, forcing the male to be deadline for a period of time. After nine years of experiments, demonstrations, popularization and application, it received good results. First, the new method to the male and female we planted in practice, we found that part of the hybrid seed combination mother flag leaves have not fully extended, tassels will stick out or start within the loose powder (especially Beijing early on the 7th, In case of drought, the performance is more prominent). This phenomenon is often not found, nor caused by seed production