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1制种前准备工作父本、母本是由育种单位提供的单株自交繁育的纯系。制种开始前对父本、母本田分别进行严格的拔除杂株,保证制种亲本的纯度。制种人员应在制种开始前10d留拇指指甲,便于剥衣。在制种期间需60～75人/hm2,才能保证完成每天的
A pre-production preparation father, female parent is provided by the breeding unit of selfing self-propagation of pure lines. Seed production before the parent, female Honda rigorous removal of hybrid plants, to ensure the purity of seed production parents. Seed producers should leave thumb nails 10 days before the start of seed production for easy dressing. In the seed production period of 60 to 75 people / hm2, to ensure completion of the day