摘要
甘肃河西就热量资源的分配,系“一季有余,两季不足”的一年一熟地区。农田种草以麦田套、复种箭筈豌豆、毛苕子等,实行“麦草轮茬”;改单一压青为“刈青喂畜,根茬肥地,农牧结合,综合利用”。农田种植豆科绿肥饲草,合理轮作,培肥地力。实践证明,每亩压青1500～2000公斤,可使后作小麦增产10～20％,抑或根茬种麦增产5～10％。广开饲源,“过腹还田”,促进农区畜牧业的发展。兼可防治小麦“全蚀病”与燕麦草的危害。农田种草是轮作制中的重要环节;是改善农田生态环境的有效措施,有着良好的综合效应。
ABSTRACT In Hexi Region of Gansu Province, the climate can provide more than enough heat to produce one harvest, but not enough for fwo harvests. It has been proven by practice that the yield of aftercrop wheat increases by 10～20% if ploughed with green legumes of about 1500～2000kg/mu. The yield increase was 5～10%if only ploughed with legume stubbles. The wheat -legume rotation system can control wheat root rot and harmful effect of oatgrass. This system can be used to develop animal husbandry in crop areas through exploiting forage resources and returning manure to the cropland. Planting legumes in cropland is an effective way to improve ecological environment of farmland.
出处
《草业科学》
CAS
CSCD
北大核心
1989年第4期15-19,共5页
Pratacultural Science
