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1 严格去杂去雄,彻底清除“三类苗”玉米制种田母本去雄不及时,是导致种子纯度降低的主要原因之一。因此,花粒期首先应组织技术人员按照技术规程,采取摸苞带叶去雄技术及时彻底干净的清除杂株和母本雄穗,特别注意清除三类苗(不结实的弱小株),防止散粉自交,保证制种质量。
1 strictly to miscellaneous health male, completely clear “three types of seedlings ” maize farming female parent to male is not timely, is one of the main reasons leading to reduced purity of the seed. Therefore, pollen period should first organize technicians in accordance with technical regulations, to take the bud with leaves to remove technology to promptly and thoroughly clean out the hybrid and female tassel, with special attention to clear the three types of seedlings (not strong weak strains), to prevent Powder self, to ensure seed quality.