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近几年来,大葱半成株采种法在大葱繁种生产上已被广泛应用。昌黎县一般在6月份播种育苗,9月份玉米、花生收获后定植,翌年6月份收获种子。大葱半成株繁种法占地时间短,投入成本低,增产潜力大,正常年份一般亩产葱种35～50公斤,高产栽培可达100公斤以上。笔者根据几年的繁种体会并总结群众的经验,认为应抓好以下几项技术要点: 一、育秧:育好葱秧是保障繁种面积、提高产量的基础。育秧地要选择地势平坦,土壤肥沃、排灌水方便的地块,亩施优质农肥4000公斤,撒施地面,旋耕15～20厘米左右做畦,畦面1米,畦埂25～30厘米,搂平畦面后撒
In recent years, the half-plant green onions seed production methods in the production of vermils has been widely used. Changli County generally sowing seedlings in June, September corn, peanuts colonization after harvest, harvest the seeds in June the following year. Half-plant green onion cucumber method covers a short time, low input costs, increase production potential, the normal year of general mu produce onion 35 to 50 kg, high-yielding cultivation of up to 100 kg. According to several years’ experience, the author comprehends and summarizes the experience of the masses and believes that the following key points should be met: First, nursery seedlings: Nurturing onion seedlings is the basis for ensuring the breeding area and increasing the yield. Seedling selection of flat topography, fertile soil, irrigation and drainage of convenient land, high-quality agricultural fertilizer Muxian 4000 kg, sprinkle the ground, rotary 15 to 20 cm to do 畦, 畦 1 meter, 畦 埂 25 to 30 cm, After hugging flat face sprinkle