一般养鱼户将动物粪便发酵后,用于池塘施肥,利用率较低。从1997年开始,广西全州县科学技术局利用动物粪养蛆,用养完蛆的残渣养蚯蚓,蛆和蚯蚓养鱼。蚯蚓粪肥塘。通过充分利用,解决了部分鱼类饲料问题;通过两次养殖,将价值几十元的粪便转化成价值上百元的饲料,节 General fish farmers animal excrement will be used for pond fertilization, the utilization rate is low. Since 1997, Guangxi Quanzhou County Bureau of Science and Technology has used animal manure maggots to raise earthworms, maggots and earthworms with the residues of raised maggots. Earthworm manure pond. By making full use of, we have solved the problem of some fish feed; through several farms, we have converted a few dozen yuan worth of manure into feed worth a hundred dollars,