我国现有肥沃高产田仅占耕地的22.6%,低产田占33.1%,耕地普遍缺氮、缺磷占59.1%,缺钾占22.9%、土壤有机质低于0.6%的耕地占10.6%。为此,培肥地力,实行以有机肥为基础的有机与无机结合,用养结合是地力建设的根本途径。种植绿肥饲草,充分利用土地资源、增加有机物资投入在农业持续发展及良性生态农业的确立中 The existing fertile and high-yield farmland accounts for only 22.6% of the cultivated land, low-yield field accounts for 33.1%, arable land generally nitrogen deficiency, phosphorus deficiency accounted for 59.1%, potassium deficiency accounted for 22.9%, soil organic matter less than 0.6% of the cultivated land accounted for 10.6%. To this end, the fertility of fertility, the implementation of organic fertilizer based on organic and inorganic combination of support is the fundamental way of construction. Planting green manure forage, make full use of land resources, increase the input of organic materials in the sustainable development of agriculture and the establishment of benign ecological agriculture