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1、鱼——桑——鸡:池塘内养鱼,塘四周种桑树,桑园内养鸡。鱼池淤泥及鸡粪用作桑树肥料,蚕蛹及桑叶喂鸡;蚕粪和鸡粪喂鱼。使桑、鱼、鸡形成良好的生态循环。试验表明,每500公斤桑叶喂蚕,蚕粪喂鱼,可增加鱼产量25公斤,桑园内养20只鸡,年产鸡粪1200公斤,相当于给桑园施氮肥18公斤,磷肥17.5公斤。2、鸡——猪:用饲料喂鸡,鸡粪经发酵等再生处理后喂猪,猪粪是农田的良好肥料。一般情况下,每40只肉仔鸡1年的鸡粪可养1头肥猪(从仔猪断奶
1, fish - Mulberry - chicken: fish ponds, ponds around mulberry, mulberry chicken. Fish pond silt and chicken manure used as mulberry fertilizer, silkworm pupa and mulberry leaves feeding chicken; silkworm manure and chicken manure feeding fish. Sang, fish, chicken form a good ecological cycle. Experiments show that every 500 kilos of mulberry silkworm feeding silkworm manure can increase fish production 25 kilograms, mulberry 20 chickens, with an annual output of 1200 kg of chicken manure, the equivalent of 15 kg of nitrogen to mulberry, phosphate fertilizer 17.5 kg. 2, chicken - pigs: feeding chickens with feed, chicken manure by fermentation and other regeneration after feeding pigs, pig manure is a good fertilizer for farmland. In general, one fat pig per year of chicken per 40 broilers will be weaned (from piglets)