近年来,国外养殖蚯蚓事业发展很快,特别是美国、日本和加拿大等国已进行工厂化养殖,利用它处理有机废物,消除环境污染,供作家禽,鱼类的饲料,蚯蚓粪便还能肥田和改良土壤。经 In recent years, the overseas breeding of earthworms has developed rapidly, especially in the United States, Japan and Canada and other countries have carried out industrialized breeding, the use of it to deal with organic waste, eliminate environmental pollution, for poultry, fish feed, earthworm excrement can fertilize And improve the soil. through