江汉平原三熟制双季稻产区,种植冬季绿肥紫云英作早、中稻基肥翻压历史悠久。当地流传着:“田要好,红花草(紫云英)”、“一年红花草,三年地脚好”。都是说明种植紫云英的好处。但是,近五、六年来,绿肥种植面积剧减,播种质量差,种子退 Jianghan Plain three double-cropping paddy rice producing areas, planted winter green manure as early as the cloud, medium-sized base fertilizer over a long history. Local circulated: “Field is better, safflower grass (Aspen), ” year of safflower grass, three years of good foot ". All explain the benefits of planting the milk vetch. However, in the recent five or six years, the area of ​​green manure has dropped sharply, the quality of sowing has been poor and the seeds have been withdrawn