配施有机肥调控农田土壤磷素有效性研究进展OA北大核心

This study reviewed the research progress on regulating soil phosphorus(P)availability by applying organic fertilizers.It summarized the current utilization status of organic fertilizer and their potential to supply P,and discussed the biological potential of rational organic fertilizers application to improve the efficient utilization of P by crops.The focus was on explaining the mechanism of regula-ting the transformation of soil P forms and improving the P availability by applying organic fertilizers.These mechanisms involved increasing soil organic matter content,reducing P fixation and adsorption,adjusting soil stoichiometric ratio,improving aggregate structure,and enhancing microbial activity.In view of the low utilization rate of organic fertilizer in China,the future research directions were pros-pected.