The Changes of Nutrition Elements During the Composting Chicken Manure and Rape Straw Under Higher Temperature

6.5×108 t livestock dejection and 17.3×108 t agricultural straw are respectively producted per year in china.Their pollution are serrious to our circumstance.If these waster are converted to organic manure, it would be a cardinal way for decreasing its pollution.The mixture of chicken manure and rape straw were composted using self-manusfacture produce microorganism for fermentation.The hurtless organic manure could be produced.During the composting process, the different proportion of the chicken manure and rape straw were used, supplementing water up to 55% moisture content, adding 0.8% inoculation, then stirring up to homogenize.Finally, the compound were piled with the cover of flax texture for keeping temperature.At first third day, the artificial turning piles were carried out for supplementing fresh air.Afterwords, this step were likely done every two days.During fermentation, the pH value was increased at first period and decreased latter period.The NH4+-N 、NO3--N and total N decreased at first period, but increased at latter period.Available P increased at first period and decreased at latter period, while total K increased continously.The total content of the humic acid decreased with prolongation of fermentation time.The highter temperature over 50 ℃ were spontaneously kept about 13 days.In the piles, the quantity of E.coli flora and roundworm ovum were decreased below hurtless stanted.The sprout index of radish seed approached to more than 91.84% in the spired test with organic manure production.It is about 30 d for appropriate composting time when composting with chicken manure and rape straw.