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我区六十年代初引种、推广冬种绿肥紫云英获得成功,对培肥稻田,增产粮食起了重要作用。但六十年代末期以后,紫云英逐年退化,盛花期在桂南也由3月中旬提早到2月初甚至1月底,鲜苗亩产由2500公斤
Introduced in the early 1960s in our district to promote the success of winter-type green algae Yun-ying success on the fertilization of rice fields, grain production has played an important role. However, after the end of the sixties late, Astragalus degradation year by year, full bloom in Guinan from early March to early February or early January, the output of fresh seedlings by 2500 kg