伟大领袖毛主席教导我们:“肥料是植物的粮食”。发展肥科生产是促证农业稳产、高产的一项重要措施。种植紫云英、毛苕子等冬季绿肥,早已成为水稻丰产的一项技术措施。解放以来,在党的领导下,绿肥作物面积逐年扩大,产量日益提高,在粮食生产上发挥了很大作用。豆科绿肥对水稻的增产作用,在于豆科绿肥可以同根瘤菌共生形成根瘤,发挥固氮作用,增加土壤中的氮素积累,满足水稻生长的需要。然而,完全依靠自然形成的共生作用,往往不能充分发挥固氮效能,特别是在一些新种植豆科绿肥的地区,往往由于土壤中 Chairman Mao, the great leader, taught us: “Fertilizer is the grain of plants.” The development of fertilizer production is to promote agricultural production and stable, high yield an important measure. Planting milk vetch, hairy spring winter green manure, rice has become a high yield of a technical measure. Since the liberation, under the leadership of the party, the area of ​​green manure crops has been expanding year by year with increasing output, which has played a significant role in food production. Leguminous green manure on rice yield increasing role is that Leguminous green manure can rhizobium symbiosis with rhizobia to play a role in nitrogen fixation and increase nitrogen accumulation in the soil to meet the needs of rice growth. However, relying solely on the symbiosis formed by nature often can not give full play to the nitrogen fixation efficiency, especially in some newly planted legume green manure areas, often due to soil