绿肥是我国传统的重要有机肥料,是传统农业的瑰宝。在20世纪70年代的农业生产中绿肥发挥过重要作用,为解决当时几亿人的吃饭问题做出了贡献;绿肥是生态农业的重要组成部分,在防治水土流失、固碳减排、生态环境保护及降低面源污染等方面具有重要作用。耕地质量不仅是粮食生产和粮食安全的基础,还与人类健康以及生态环境的可持续发展息息相关~([1])。京郊耕地肥力水平中等,其土壤有 Green manure is an important traditional organic fertilizer in our country and a treasure of traditional agriculture. Green manure played an important role in agricultural production in the 1970s and contributed to solving the problem of eating by hundreds of millions of people at that time. Green manure is an important part of eco-agriculture and has great significance in preventing and controlling soil and water loss, carbon sequestration and emission reduction, and ecological environment Protect and reduce non-point source pollution and so has an important role. The quality of cultivated land is not only the basis of food production and food security, but also closely related to human health and the sustainable development of the ecological environment ([1]). The fertility level of cultivated land in the suburbs of Beijing is medium with soil