利用大棚制种间隙抢种甘蓝增效益乐亭县城南独王庄村７家农户，近年来利用大棚制菜种前的空闲时期（约３月一５月初）抢种一茬甘蓝苗，连续４年亩产甘蓝４０００公斤左右，收入３５００元以上，由于比一般地膜甘蓝可提早上市，亩约可增加效益２５００元。他们的具体做法是... The use of greenhouse seed production space to grow cabbage increase efficiency Laoting County South Dangzhuang village seven households, in recent years the use of greenhouse vegetable cultivation before the idle period (about March-May early) grab a row of cabbage seedlings, continuous 4 years of mu produce About 4000 kg of cabbage, more than 3,500 yuan income, due to the general market earlier can be more than cabbage, acres can increase the effectiveness of about 2,500 yuan. Their specific approach is ...