细绿萍属于水生植物,繁殖快,产量高,肥效好,生产周期长,具有抗寒湿生、耐盐的优良特性。我区于1979年引进细绿萍壹斤,在十三顷大队进行试养,当年发展到20多亩,到1983年全区放养面积已达600多亩,今年计划推广2000亩以上。十三顷大队利用细绿萍培肥稻田地力、饲养家畜和养鱼均取得一定效果。试验证明,培肥稻田地力可以增加土壤养分含量: Fine green Lupin belongs to aquatic plants, rapid propagation, high yield, good fertilizer efficiency, long production cycle, with cold hardiness, salt tolerance excellent features. In 1979, our district introduced one pound of fine green pingpong and experimented at 13-hectare brigade in that year to 20 mu. By 1983, the stocking area in the entire area had reached 600 mu and planned to promote more than 2,000 mu this year. Thirteen ares of brigade use fine green Pingfei paddy fertility, raising livestock and fish have achieved some results. Experiments show that fertility paddy soil fertility can increase soil nutrient content: