大力发展牧草绿肥作物,是我省西北部地区,改变地多人少、广种薄收状态,促进农林牧全面发展的一项重要措施.种植牧草绿草作物,在农业生产上的作用是多方面的。一、改土肥田土壤中缺肥,这是我省农村各地区,特别是西北部地区,在农业生产上的一个突出问题。作物需要的肥 Vigorously develop pasture green manure crops, is an important measure to promote the comprehensive development of agriculture, forestry and animal husbandry in the northwestern part of our province, with fewer people being changed, wide variety and thin income, and planting grass and green grass crops in many aspects. First, the soil is not fertilizing soil fertilizer, which is our province in rural areas, especially in the northwestern region, a prominent issue in agricultural production. Crop needs fertilizer