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一、去雄的时间和方法:在雄穗抽出1/3时,即手能握住时就要抽掉,一般应分二、三次进行.去雄的数量一般是50%,有隔行去雄和隔株去雄两种,当玉米授粉完毕后可剪去全部雄穗.二、掌握的原则:去雄应掌握去弱不去强,去病虫株留健株;地边可去少一些(约1/3),地中心可去多一些;上风头去少,下风头可稍多;生长整齐一致可去多一些,反之则去少一些.在山岭地区还应掌握:连片地块或分散地块、坡上或坡下、大块或小块、窄条或方块地、风口或背风地,去雄的数量均应有别,一般采用隔株去雄增产效果较好.
First, the time and method of the male: In the tassel out of 1/3, that is, when the hand can hold it should be removed, the general should be divided into two or three times to go to the number of male is generally 50% Second, the mastery of the principle: to the male should be weak to go strong, to leave strains of pests strains; to the ground can be less ( About 1/3), the center can go to more; the upper hand to less, the downside may be slightly more; growing neatly to go some more, and vice versa to less. In the mountains should also be mastered: contiguous plots or Dispersed plots, slopes or slopes, chunks or small pieces, narrow strips or squares, tuyere or lee, to the number of male should be different, the general use of male sterility plants to increase production is better.