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1 玉米制种的技术要求玉米制种总的技术要求:一是父、母本达到理想的花期相遇,实现充分授粉。二是防止混杂,保证种子纯度,提高种子质量。三是提高杂交制种质量,增加产量。2 因地制宜,合理布局选择玉米制种区的基本要求是:晚熟区海拔不高于1500m,中熟区海拔在1500～1600m,早熟区海拔不高于1650m。
A corn seed technical requirements of the total production of corn seed technical requirements: First, the parent, the mother of flowers to meet the ideal flowering to achieve full pollination. The second is to prevent mixing, to ensure seed purity, improve seed quality. Third, improve the quality of hybrid seed production, increase production. 2 According to local conditions, the rational distribution of maize seedling selection of the basic requirements are: Late-maturing area is not higher than 1500m above sea level, medium-maturing area at 1500 ~ 1600m, precocious area is not higher than 1650m above sea level.