冬绿肥(大草、蚕豆、红花草)是一种优质的有机肥料。种足种好绿肥,大搞肥料基本建设,对促进农业生产发展十分重要。近年来,由于有机肥料不足,不少田块长期施用化肥,造成土壤有机质减少,物理性状恶化,土壤发僵板结,干时坚硬,湿时粘重,坌坌一条缝,敲敲一个洞,庄稼发勿起。同时,由于有机肥料不足,往往是“寅吃卯粮”,造成“三麦基本吃饱,早稻半饥半饱,晚稻得得味 Winter green manures (grass, broad beans, safflower grass) is a high-quality organic fertilizer. It is very important to promote the development of agricultural production by planting enough kinds of good green manures and vigorously promoting the basic construction of fertilizers. In recent years, due to the shortage of organic fertilizers, many fields have been using fertilizers for a long time. As a result, soil organic matter is reduced and physical properties are deteriorated. Soil is stiff and hard, dry and sticky when wet. Do not start. At the same time, due to lack of organic fertilizers, tend to be “Yin eat grain”, resulting in "three wheat basic full, early rice semi-full, late rice get taste