Deng Jia, Hu Meng-Kun, Zhao Xiu-Lan, Ni Jiu-Pai, Xie De-Ti
Huan Jing Ke Xue. 2015 Mar;36(3):1098-104.
The existing forms of phosphorus in seven organic waste materials including biogas residues of swine manure (ZZ), biogas residues of cattle manure (NZ), compost of cattle manure and corn straw (NJD), compost of sewage sludge (WD) and compost of rural daily garbage (NSLD) were characterized according to phosphorus fractionation procedures developed by DOU et al. The result showed that there was a great difference in the total phosphorus (TP) and the total phosphorus of various forms (P(t)) among different organic materials. ZZ had the highest content of TP with the value of 23.59 g x kg(-1); while NZ had the lowest TP content with the value of 3.61 g x kg(-1). The contents and proportions of phosphorus fractions in ZZ, NZ, NJD and WD followed the order of HCl-P > Residues-P > NaHCO3-P > NaOH-P > H2O-P, while followed the order of HC1-P > Residues-P > H2O-P > NaHCO3-P > NaOH-P in the three NSLDs. The proportion of HCl-P in the total fractionated phosphorus (P(tt)) in seven organic materials ranged from 47.75% to 84.96%, which indicated that most of P in organic materials existed in the forms that were easier to be extracted by strong extracting agents like HCl, which was difficult to be absorbed by plants. The inorganic phosphorus accounted for 79.72% -94.76% of the total phosphorus in the organic materials. Of all the phosphorus forms, the NaHCO3-P had the highest inorganic phosphorus fractions, but the inorganic phosphorus was mainly distributed in HCl-P. The organic phosphorus was mainly distributed in HCl-P and Residues-P. In addition, the higher proportions of inorganic phosphorus in NJD than those of NZ demonstrated that the composting process was benefit for the mineralization of organic phosphorus in organic materials and thus improving its availability.
采用窦等提出的磷分级程序，对包括猪粪沼渣（ZZ）、牛粪沼渣（NZ）、牛粪与玉米秸秆堆肥（NJD）、污泥堆肥（WD）和农村生活垃圾堆肥（NSLD）在内的7种有机废弃物中磷的存在形态进行了表征。结果表明，不同有机物料中总磷（TP）及各形态总磷（P(t)）存在很大差异。ZZ的TP含量最高，为23.59 g·kg⁻¹；而NZ的TP含量最低，为3.61 g·kg⁻¹。ZZ、NZ、NJD和WD中磷形态的含量及比例顺序为HCl-P＞残渣态-P＞NaHCO₃-P＞NaOH-P＞H₂O-P，而3种NSLD中磷形态的含量及比例顺序为HCl-P＞残渣态-P＞H₂O-P＞NaHCO₃-P＞NaOH-P。7种有机物料中HCl-P在总分级磷（P(tt)）中的比例为47.75%～84.96%，这表明有机物料中的大部分磷以HCl等强提取剂更容易提取的形态存在，而这种形态难以被植物吸收。无机磷占有机物料总磷的79.72%～94.76%。在所有磷形态中，NaHCO₃-P的无机磷组分最高，但无机磷主要分布在HCl-P中。有机磷主要分布在HCl-P和残渣态-P中。此外，NJD中无机磷比例高于NZ，表明堆肥过程有利于有机物料中有机磷的矿化，从而提高其有效性。
