绿肥是我国传统农业的瑰宝,在20世纪70年代的农业生产中发挥过重要作用,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,在防止水土流失、节能减排、降低水体污染等方面具有重要作用。对京郊冬季农田裸露治理来说,其防风固沙,绿化、美化等生态效果明显,是北京都市型现代农业可持续发展的重要一环。因此,京 Green manure is a treasure of China’s traditional agriculture and played an important role in agricultural production in the 1970s. It contributed to solving the problem of feeding hundreds of millions of people at that time. Green manure is an important part of ecological agriculture, Energy-saving emission reduction, reduce water pollution and other aspects play an important role. For the winter farmland in Beijing suburb governance, its windbreaks and sand fixation, landscaping, landscaping and other ecological effects is obvious, is an important part of Beijing urban modern agriculture sustainable development. Therefore, Beijing