我场自57年起开始大面积栽培蚕豆并列入正式轮作,这是针对我场土壤肥力差而决定的.蚕豆本身产量不低,且对后作物的影响很好.57年在玉米连作地上种植蚕豆80亩,平均亩产达到100公斤,耕翻后接着播种冬小麦,未施肥料亩产120公斤.58年种植700亩,土壤条件80%的面积前作是玉米,20%的面积前作是甜菜,未施肥料,平均亩产229.7公斤(因为雨水较多),后作冬小麦亩产150公斤.经调查,蚕豆收割后,残留在土壤内的有机质每亩达500公斤,所以我们规划的八田轮作是:㈠苜蓿、㈡苜蓿、㈢玉米、㈣块根块茎作 Since 57, we have started extensive cultivation of fava beans in formal rotation, which is determined by the poor soil fertility in our farm. The production of fava bean itself is not low and the impact on the after-crops is very good. Planted 80 acres of broad beans, the average per-mu yield of 100 kg, plowing and then sowing winter wheat, not fertilizing mu 120 kg 58 years planted 700 acres, 80% of the soil conditions for the area before the corn, 20% of the area before the beet , No fertilizer, the average yield of 229.7 kg (because of more rain), after the winter wheat per mu 150 kg after investigation, broad bean harvest, the residual organic matter in the soil up to 500 kg per mu, so we plan the Hatta rotation Is: (i) alfalfa, (ii) alfalfa, (iii) corn, and (iv) tuberous tubers