豆科绿肥对四川丘陵旱地作物的产量及经济效益初探

The preliminary study on the effect of leguminous green manure on crop yield and economic benefits in hilly dry of Sichuan

在丘陵旱地上研究了豆科绿肥对农作物产量和效益的影响。结果表明:(1)绿肥翻埋与化肥减量配合对玉米增产、增效明显,绿肥翻埋7 500～15 000 kg/hm2与70%、85%化肥配施的资源效应最高,比单施化肥增产13.7%～17.3%、提高效益800～1 381元/hm2。(2)在旱地多熟制预留带中间种豆科绿肥对同季小麦有明显的增产效果,对后季玉米也有一定增产作用,以间种扁荚山黧豆最佳,可使小麦增产9.2%、玉米增产6.3%,周年效益提高1 398元/hm2。

A experiment was conducted in hilly dry to study the effect of leguminous green manure on crop yield and economic benefits.The results showed that：（1）Applied buried green manure（7 500～15 000 kg/hm2） and reduced chemical fertilizer（70% or 85% of common） could achieve the best resources response,being 13.7%～17.3% of crop yield and 800 ～1 381yuan/hm2 of economic effect higher respectively than applied the chemical fertilizer only.（2） the multi-system,planted the leguminous green manure in the lines reserved,could increase the yield of wheat in season and maize followed.The treatment of flat pods of Lathyrus planted was the best,which could increase the yield of wheat and maize,being 9.2% and 6.3%,respectively,and the annual benefit was increased 1 398 yuan/hm2.