Study on the Nitrogen Transforming Regulation during the Pig Dung Compost

The dynamic changes of various nitrogen-containing compounds were studied during pig manure composting with or not straw and bacterium being added.The results showed that adding straw and bacterium could reduce the loss of total nitrogen and organic nitrogen.The loss was 38%,80%,21%,respectively,with total nitrogen,NH+4-N/TN,organic nitrogen/TN during complex composting of manure,straw and bacterium.However,the loss was 78%,38%,59%,respectively,with total nitrogen,NH+4-N/TN,organic nitrogen/TN during simple manure composting.