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本文阐述了在不施氮肥情况下，通过引进豆科间作作物使２种禾谷类种植制增加生产力、氮产出率和地面覆盖率的效果。在土壤低氮水平下种植的小麦或大麦行间栽培固氮豆科作物，１９８９—１９９２年在墨西哥多数处于雨养条件下，发现与对照禾本科作物产量（分布于１一４ｔ／ｈａ）相比，没有一种豆科作物使禾本科作物减产，而在某些情况下豆科作物附加的总生物量要高于对照１倍以上．不同的豆科作物试验表明了对不同种植者需要的适应性，间作的豆科作物于生物量在其后种植的饲草作物长柔毛野豌豆情况下可高达６．５ｔ／ｈａ，蚕豆（Ｖｉｃｉａｆａｂａ）可收１．４ｔ／ｈａ的干豆加３．５ｔ／ｈａ的绿草．间作下总生物量产生的土地当量率高达１．５４。作物冠层光照测定表明，间作制较单作禾本科作物接受的光辐射比率高，从而说明了产生总生物量的差异大。此外，叶片氮素水平为３．８％，说明间作更科作物固定的氮素大于小麦作物移去的氮素．本文还对间作制下通过增加地面覆盖防治土壤侵蚀及增加土壤有机质投入的潜力进行了讨论。
This paper describes the effects of increasing productivity, nitrogen yield and ground coverage of two cereal cropping systems by introducing inter-leguminous crops without nitrogen fertilizer. Nitrogen-leguminous crops were planted between rows of wheat or barley grown under soil low nitrogen levels, mostly in rainy conditions in Mexico during 1989-1992 and were found to have been found to be yielding more than the control gramineous crop (distributed between 1 and 4 t / ha) , No leguminous crop reduced gramineous crops, while in some cases the total biomass added to leguminous crops was more than double that of the control. Different leguminous crops tested showed the need for different growers. Intercropping leguminous crops up to 6.5t / ha with forage crops villosum peas, Viciafaba) receives 1.4 t / ha of dried beans plus 3.5 t / ha of green grass. Intercropping of the total biomass yield land equivalent rate as high as 1.54. Crop canopy illumination measurements showed that the ratio of light radiation received by intercropping was higher than that of monocropping crops, indicating that there was a large difference in total biomass production. In addition, the leaf nitrogen level was 3.8%, indicating that nitrogen intercropped with more crops was larger than nitrogen removed by wheat crops. The paper also discusses the potential of inter-cropping to control soil erosion and increase inputs of soil organic matter through increased ground cover.