The Control Of Nitrogen Loss In Composting Of Livestock Manure

The amount of animal manure emission keep inereasing, while breed industry are blooming With the intensive husbandry, more poultry manure casused serious environment pollurion, on the other hand, however if we dealed with well. Disposal of these Poultry manure rightly to make them beeome fertilzer for us is not impossible. However, there is severe nitrogen loss in aerobie eomposting of livestoek and Poultry manure, which results in serious pollution and reduction of nutrient contents in fertilizer.In this study, superphosphate is added to the composting fertilizer, which is mixed with sow manure, chicken manuter and corn stalks. Compareing with the compopsting fertilizer without superphosphate, the author wants to find the changes in the nature of various physical and chemical laws. In the latter trials, the author wants to research the impact of different composting way to the rate of controling nitrogen by adding superphosphate. With a view to provide a reliable control of the composting program for the development of composting. The results are as follow:(1)Adding superphosphate is helpful for the moisture maintaining, but is not conductive to heat.(2)Adding superphosphate can regulate pH of reator body, as well as can make C/N decrease greater.(3)After adding superphosphate, nitrogen is more conducive to keep, and total nitrogen content incerased, and the content of NH4-N is high, the author also find the conversion of nitrogen to NO3-N become moer easily.(4)Adding superphosphate to the composting fertilizer and controling the C/N ratio in 25-30 we can control the most nitrogen.(5)In different forms of blast, the order of efficiency of controling nitrogen from high to low is:intermittent blast,continuous blast and Artificial blast.(6)With the addition of superphosphate increased from 5%,10% to 15%, the total nitrogen content of compost increase in turn.