近年来,随着先进生产设备和科学饲养技术在家禽养殖上的应用,家禽业得到迅猛发展,规模养禽场、养殖小区迅速崛起,家禽饲养量急剧上升。然而,家禽生产对环境的污染等问题越来越突出。据统计,每只蛋鸡每年能生产45～50千克新鲜鸡粪,每只肉鸡平均产生22～ In recent years, with the application of advanced production equipment and scientific feeding techniques in poultry farming, the poultry industry has witnessed rapid development. The scale of poultry farms and breeding communities have rapidly risen and the poultry raising has risen sharply. However, the problems of environmental pollution caused by poultry production have become increasingly prominent. According to statistics, each hen can produce 45 to 50 kg of fresh chicken manure each year, each producing an average of 22 ~