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1 制种基地的选择玉米杂交制种要求选择的制种田集中连片,便于管理,土层肥沃,灌溉方便,无遮阳,有300m以上的隔离距离的地块。2 整地,施肥酒泉玉米为春播制种,冬前完成深耕整地。前茬作物收获后立即浅耕,深度25～30cm。2～3年轮作。播前浇水,15d后整地。制种玉米施肥应以底肥为主,冬前结合深耕整地施入有机肥4.5万～6.0万kg/hm2,播种前施磷酸
The choice of seed production base Maize hybrid seed production requirements of the selected system of concentrated contiguous, easy to manage, fertile soil, easy irrigation, no shade, there are more than 300m isolation block. 2 site preparation, fertilization Jiuquan corn spring sowing, deep plowing completed before the winter. Immediately after harvesting the crop immediately after shallow tillage, depth 25 ~ 30cm. 2 to 3 years rotation. Watering before sowing, 15d after preparation. Corn seed production should be based on the main fertilizer, combined with deep plowing before winter planting organic fertilizer 45,000 to 60,000 kg / hm2, before planting phosphate