５．严把除杂去雄关除杂去雄是田间保证种子纯度的关键环节。除杂工作要本着“早间苗、晚定苗、及时除杂苗”的原则，坚持苗期、拔节期、抽雄前三次除杂。去雄工作要实行“摸苞带苞叶去雄法”。摸苞带苞叶去雄可促进营养向雌穗转化，增加产量，有助于减轻玉米螟危害，提早... 5. Strict removal of impurities to the male off miscellaneous to male field is to ensure the purity of the key link. Removal work should be based on the “morning seedlings, late Dingmiao, timely removal of Miao” principle, adhere to the seedling stage, jointing period, tassel removal three times before the impurity. To work hard to implement the “bud with bud with leaves to male method.” Bud bract with husk leaves to promote male to promote nutrition to the ear transformation, increase yield, help to reduce corn borer damage, early ...