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鸡粪经过生物发酵处理后,消灭了病菌、虫卵和臭味,成为营养元素丰富的优质有机肥料。图为河北立农肥
Chicken manure after biological fermentation treatment, eliminating germs, eggs and odor, a nutrient-rich high-quality organic fertilizer. The picture shows Hebei agricultural fertilizer