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洋葱属异花授粉作物,种子容易杂交变异,需选择种性纯的洋葱种,葱头成熟才能形状一致,为早熟自然倒苗、不抽苔、不分杈打下基础。主推技术:科学种植密度、地膜覆盖、测土配方施肥、病虫害综合防治。适时播种、培育适龄壮苗,推荐品种:1.黄皮洋葱:太阳1号、玉皇、迪斯、赛特一号、太阳6号;2.红皮洋葱:红冠、红太阳1号。1土地选择:选择地势平坦、灌水方便、通风良好、土层深厚的肥沃土壤栽培,前茬以小麦、玉米、豆类最佳。整
Onion is a cross-pollination of crops, the seeds are easy to hybrid variation, the need to choose the kind of pure onion species, onions mature to shape the same, early maturing natural inverted seedlings, no bolting, lay the foundation without bifurcation. The main push technology: scientific planting density, plastic film coverage, soil testing and fertilizer, pest and disease prevention and control. Timely sowing, nurturing age strong seedlings, recommended varieties: 1. yellow onion: the sun on the 1st, the Jade Emperor, Disi, Saite No. 1, the sun on the 6th; 2 red onions: red crown, red sun on the 1st. A choice of land: choose flat topography, convenient irrigation, good ventilation, deep soil fertile soil cultivation, the former crop with wheat, corn, beans best. whole