摘要
草田轮作后,土壤的生物及理化性状明显改善,豆科饲草茬地对春小麦增产效果显著,复种豆科茬地种植秋作物,增产幅度比春小麦增产明显;作物在生长前期套种饲草后,套种豆科饲草的比对照普遍增产,而套种禾本科饲草种植玉米的比对照减产;在粪肥用量较多时,化肥的增产有限,粮食增产中80%以上是施粪肥获得的。草田轮作不仅为农区养殖业提供大量优质饲草,而且能改善土壤的理化和生物性状,对粮食作物有显著的增产作用。
After the grasscrop rotation in Linxia, the soil physical and chemical properties were improved dramatically, legume had a remarkable effect on spring wheat yield increase Interplanting legume with spring wheat gave higher yield than control, while interplanting grass with maize produced lower than control The rotation can not only provide large quantity of feed, but also improve soil feature, has an distinct effect on crop yield increasing
出处
《草业科学》
CAS
CSCD
2003年第4期10-13,共4页
Pratacultural Science
