Effect of P Solubilizing Bacteria on Rape Yield and the Content of Soil Phosphorus(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of P Solubilizing Bacteria on Rape Yield and the Content of Soil Phosphorus

Author(s):: WANG Ya-yi; Soil and Fertilizer Institute，Qinghai Academy of Agricultural Forestry Sciences，Xining，Qinghai 810016

Abstract:: Taking rape as material,phosphorus inoculum was prepared by phosphorus dissolving bacteria strains which were separated by our group for rape pot experiment.The results showed that regardless of fertiliziting P or not，using solubilizing bacteria could significantly increase the rape yield，which improved the production mostly were phosphorus-solubilizing bacteria w12-7 and phosphorus bacteria y9-4，followed by phosphorus-solubilizing bacteria w5-2.After harvesting，soil available-P content changed widely.When none fertilizer P，the content of soil available-P was decreased on the condition of phosphorus-solubilizing bacteria w12-7 and phosphorus bacteria y9-4，less than the control change value of 23.4% and 34.8%.Under the condition of P fertilizer，available P content of all treatments was improved，which improved the production mostly were phosphorus-solubilizing bacteria w5-2 and phosphorus bacteria y9-4.It was not obvious of the effect of P solubilizing bacteria on soil pH and total phosphorus.Tests showed that phosphorus-solubilizing bacteria w12-7，w5-2 and phosphorus bacteria y9-4 were better strains used in calcareous soils in Qinghai.

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Last Update: 2014-08-10