Phosphate-Dissolving Ability of Phosphate-Solubilizing Fungi PFK-1 and Its Growth-Promoting Effect on Brassica napus
Xu Wenfeng
Xing Fangfang
Song Tao
Hu Zhaoping
Li Xinzhu
Abstract：The phosphate-dissolving ability of phosphate-solubilizing fungi PFK-1 was determined by solid and liquid culture methods.Its growth-promoting effect on rape and impacts on changes of soil phos-phorus were studied by pot experiment.The strain PFK-1 was inoculated in liquid medium with Ca3 (PO4 )2 as the only P source and the phosphorus-dissolving capacity reached 768 mg/L after cultured under condi-tions of 28℃and 120 r/min for 144 hours.The pH in liquid medium decreased with the increase of phosphor-us-dissolving capacity,and reached 1 .87 after cultured for 144 hours and continued to maintain a low level. Pot experiment showed that 1%and 2%PFK-1 compounded with nitro fertilizer could increase the rape fresh weight by 7.19%,22.15% and dry weight by 33.1 1%,40.88% respectively,and the soil available phos-phorus increased by 30.27% and 52.36%.
Keywords：Fungi PFK-1Phosphate-dissolving abilityGrowth-promoting effect
Publication Date：2014-05-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 85-89 )