The total nitrogen of PMC, PMS, PMST and PMMR were 2.30%, 2.28%, 2.50% and 2.67% respectively. But the nitrogen changing level of contract treatment(net Pig Manure) was not significant.

• 四个处理的全氮含量均在堆肥前8d有一小幅度下降，而后逐渐上升，到堆肥结束时米糠(PMC)、锯末(PMSD)、稻草(PMST)、菌渣(PMMR)处理的全氮含量分别为2.；30%25、2