Wheat and rice stubble and Chinese milk vetch are turned down and buried in the field; they are easy to rotten and increasing the organic fertilizer of the filed.
稻麦茬和红花草翻耕田底，易于腐烂，有利于增加农业有机肥力。
2
After the activated sludge dehydration and dehydration can be used as fertilizer or buried.