为了提高葱头产量保障市场供给,我们从1982年起对葱头栽培进行三项技术改进,取得较好效果。一、实行地膜覆盖,增加定植密度:定植葱头时实行地膜覆盖,按10—13厘米的株距定植。加强水肥管理。这样做有缓苗快、苗齐、鳞茎膨大早,葱头个大,产量 In order to improve the market supply of green onion production, we have conducted three technological improvements on green onion cultivation since 1982, and achieved good results. First, the implementation of plastic film mulching to increase the planting density: the implementation of plastic mulching onion planting, planting spacing of 10-13 cm. Strengthen water and fertilizer management. Huanmiao have done so fast, Miao Qi, bulging early bulbs, onion a large, yield