紫云英、苕子是桂中、南地区新推广的主要冬季绿肥,在种植过程中,发生了一些病害,有些已严重的危害了绿肥的生产。为了查清病害种类及其发生为害情况,总结群众栽培防病的经验,笔者等于今年2—4月间先后到博白、容县、北流、平南、藤县、岑 Ziyunying, razor clam is the main winter green manure newly promoted in central Guangxi and southern regions. Some diseases have taken place in the planting process and some of them have seriously endangered the production of green manures. In order to find out the types of diseases and the occurrence of damage, summed up the experience of mass cultivation and disease prevention, I mean this year from February to April has to Bobai, Rongxian, Beiliu, Pingnan, Tengxian, Cen