A green manure is a crop grown mainly to improve soil fertility.种植绿肥作物主要是为使土壤更加肥沃.If farm - yard manure is used it must be well rotted.如果使用农场的粪肥,必须让它完全腐烂.Pig - breeding not only improves the people's diet; it makes ...
Pig - breeding not only improves the people's diet; it makes more manure available.养猪不独可以改善人民生活, 还能多积肥料.They started me off in the gardens as a handyman. Digging, forking manure, that kind of thing.他们让我先在园子里干些杂活，挖土、...