Effects of phosphate-solubilizing bacteria application on soil phosphorus availability in coal mining subsidence area in Shanxi

Journal of plant interactions

article

Xiao-Kai Shi¹  Juan-Juan Ma¹  Li-Jun Liu² 

[1] College of Water Conservancy Science and Engineering, Taiyuan University of Technology;Shanxi Academy of Environmental Research

关键词: Phosphate-solubilizing bacteria;    soil reclamation;    phosphorus fractionation;    phosphorus adsorption–desorption;    coal mining subsidence area;   

DOI  :  10.1080/17429145.2017.1308567

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

The effect of phosphate-solubilizing bacteria (PSB) application on phosphorus (P) availability in reclaimed soil in coal mining subsidence region was investigated. Seven treatments were carried out including control, chicken manure (CM), PSB, PSB + tricalcium phosphate (TCP), CM + TCP, PSB + ground phosphate rock (GPR) and CM + GPR. The results showed soil Olsen-P concentration and phosphatase level as well as the yield of pakchoi ( Brassica chinensis L.) were significantly higher in PSB application treatments compared to the corresponding CM application treatments. Soil phosphatase, invertase and urease contents were increased most significantly in PSB treatment, 1.18-, 1.31- and 2.32-fold higher than those in the control, respectively. Soil Ca 2 -P, Ca 8 -P, Fe-P and Al-P concentrations exhibited the greatest increases in PSB + TCP treatment, while occluded-P showed minor changes in different treatments. Application of PSB fertilizer reduced the transformation of Olsen-P to Ca 10 -P, thus increasing P availability in reclaimed soil of coal mining subsidence area.

【 授权许可】

CC BY|CC BY-NC