豆要多种,田要多冻种植豆类作物可依靠与之共生的根瘤菌,固定空气中的游离氮紊,加强土壤微生物的活动,改善土壤结构,提高土壤肥力,达到“以田养田”,促进后作增产。据研究,每亩蚕豆可固氮26.7斤,相当于130斤硫酸铵;每亩豌豆可固氮18.66斤,相当于90多斤硫酸铵。豆类作物的子尖是含蛋白质很多的、营养价值很高的粮食,蚕豆子实含蛋白质25％左右,豌豆子突含23％左右,多食豆类可增进人体健康。豆类作物茎 Beans to a variety of fields to be more frozen planting leguminous crops can rely on symbiotic rhizobia, fixed free nitrogen nitrogen in the air to enhance soil microbial activity, improve soil structure and improve soil fertility, to “ ”, To promote production for later. According to the study, per mu of fava beans can be 26.7 pounds of nitrogen, equivalent to 130 kg of ammonium sulfate; peas per acre 18.66 pounds of nitrogen, equivalent to 90 kg of ammonium sulfate. The tip of leguminous crops is a large protein content, high nutritional value of food, beans, beans containing about 25% protein, pea sudden with about 23%, eat more beans can enhance human health. Legume crop stems