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一、播种育苗大葱忌连作,育苗地也不可连作。对育苗地要深耕施肥,做成70～100厘米宽的小平畦,每667平方米(1亩)苗床用种3～5公斤,育成的苗可供1公顷地栽植。大葱种子在18℃左右发芽最快,播后5～6天可以出苗,待子叶出土后才能浇水,幼苗在春暖以前生长缓慢,不必多施肥和浇水。清明后幼苗开始加快生长,要及时施肥、浇水,拔除过密的弱小幼苗。二、整地移栽以收获葱白为主的大葱,园土必须深耕50～70厘米,要精细整地,每隔50～85厘米开一条15厘米
First, seeding nursery green onion bogey, breeding ground can not be made. Cultivation of fertilizers on the nursery to make 70 to 100 cm wide Xiaoping, every 667 square meters (1 mu) seedbed with 3 to 5 kg, bred for 1 hectare planted. Onion seeds germinate at about 18 ℃, the fastest, 5 to 6 days after sowing can be sprouted until cotyledons unearthed before watering, seedlings grow slowly before spring, do not have to fertilize and water. After the Ching Ming seedlings began to accelerate growth, it is necessary to timely fertilization, watering, removal of overly dense seedlings. Second, the preparation of transplanting To harvest the shallot based green onions, garden soil must be plowing 50 to 70 cm, to fine preparation, every 50 to 85 cm to open a 15 cm