有机物料中有机磷矿化进程的研究

采用室内恒温好气培养试验,研究不同C/N有机物料腐解过程中有机磷的矿化特征与进程。结果表明:新鲜粪肥类有机物料中磷以无机磷(P i)为主,秸秆类有机物料中磷以有机磷(Po)为主,有机物料中有机磷在培养的前30天矿化最快,之后趋于平缓,培养结束时,供试有机物料中磷均以无机磷为主,约占全磷的70~90%;不同有机物料有机磷的残留率在腐解前期差别很大,后期趋于一致,有机磷的矿化要先于有机氮;有机物料中磷的矿化速率大小与C/PO及有机磷含量的大小存在显著的相关关系。

Research Progresses in the Mineralizatoin of Organic Phosphorus in Organic Materials

The research progresses in the mineralization of P in organic materials with different C/N were reviewed in this paper.The main points showed that organic phosphorus(Po) was the main P in straw about 60-80%,but inorganic phosphorus(Pi) was found mainly in manure Po was mineralized most quickly in the first 30 days,and then the process became slowly.The residual Po rates of organic materials were different at the first stage of mineralization,but they became equal at the end.The mineralization of phosphorus happened earlier than that of nitrogen and the mineralization rate had a close correlation with the C/Po and the content of Po in organic materials.