灌溉排水学报2017，Vol.36Issue(7)：75-79,5.DOI:10.13522/j.cnki.ggps.2017.07.014
溶磷真菌及其组合对复垦土壤磷解析和转化的影响
Effect of Soluble Phosphorus Fungi and Their Combinations on Adsorption-desorption of Phosphorus and Its Transformation in a Reclaimed Soil
摘要
Abstract
We studied the effect of phosphorus-dissolving fungi on phosphorus in reclaimed soil using pot experi-ments grown with rape. Three fungi, Aspergillus niger (Z1), Penicillium (Z2), Mortierella (Z3) and their combina-tions were examined. During the experiment, we measured the adsorption-desorption and the transformation of the phosphorus. The results showed that the soluble phosphorus fungi could increase the effective phosphorus and phosphatase contents in the reclaimed soils. The treatments with soluble phosphorus fungi and their combination increased the contents of available p and phosphatase by 58.6％～158.9％ and 3.7％～87.8％, respectively, com-pared with those without soluble phosphorus fungi treatment. The maximum adsorption capacity of p under com-binations of Z1, Z1+Z3, Z2+Z3, Z1+Z2+Z3 were significantly smaller than that without soluble phosphorus fun-gi treatment. The adsorption coefficient varied from 0.036～0.069, and the P adsorption between treatments with soluble phosphorus fungi and the non-treatment was insignificant. The average desorption rate in all treatments ranged from 21.14％to 34.57％, and the highest desorption rate was in Z2+Z3, which was 34.57％. The soluble phosphorus fungi had no effect on transformation of O-P, Fe-P and Al-P, while Ca2-P and Ca10-P had substantial impact on transformation of inorganic phosphorus. The soluble phosphorus fungi could inhibit transformation of phosphorus to Ca10-P and increased the content of Ca2-P. Z2+Z3 gave the highest Ca2-P content, being 28.73 mg/kg. In summary, applying phosphorus-dissolving fungi could increase the available phosphorus and improve phos-phorus availability in reclaimed soil, facilitating recovery of reclaimed soil. Our experiment revealed that the Z2+Z3 combination is most efficient in improving phosphorus desorption and transformation.关键词
溶磷真菌/不同溶磷真菌组合/复垦土壤/磷解析/无机磷转化Key words
soluble phosphorus fungi/combination/reclaimed soils/phosphorus adsorption-desorption character-istics/transformation分类
农业科技引用本文复制引用
乔志伟,洪坚平,李林轩..溶磷真菌及其组合对复垦土壤磷解析和转化的影响[J].灌溉排水学报,2017,36(7):75-79,5.基金项目
国家自然科学基金项目(31272257) （31272257）
贵州省科技厅、安顺市人民政府、安顺学院三方联合基金项目(黔科合LH字(2016-7280号)) （黔科合LH字(2016-7280号）
山西省科技攻关项目(20121101009-4) （20121101009-4）
