溶磷微生物对不同磷矿粉的溶解能力

Rock Phosphates Solubilization of Some Microorganisms

通过培养试验对微生物溶解不同来源磷矿粉的能力做了一些探索。结果表明 ,供试细菌溶解来自湖北宜都和贵州开阳的磷矿粉能力比较强 ,培养 7d最高有 2 .73%的磷被溶解出来 ;而供试真菌溶解云南磷矿粉的能力最强 ,也能溶解来自四川清平和贵州开阳的磷矿粉 ,培养 7d最高有 11.91%的磷被溶解出来 ,而培养 8d高达约2 5 .4 0 %的磷被溶解出来 ,二者溶解湖北钟祥磷矿粉的能力比较弱。预先对磷矿粉进行微波、超声波和高温(30 0℃、5 0 0℃、80 0℃ )处理 。

The use of microorganisms to solubilize rock phosphates was studied. The results indicated that the tested bacteria had a stronger capacity to dissolve the rocks from Yidu of Hubei province and Kaiyang of Guizhou province. The maximal efficiency of P solubilization was 2.71% during 7 d incubation. The tested fungi showed much higher ability to dissolve the rock from Yunnan province. They also released a large amount of P from the rocks from Qingping of Sichuan province and Kaiyang of Guizhou province. The highest efficiency of P solubilization was 11.91% and 25.40 %during 7 d and 8 d incubation, respectively. The pre treatments of ultrasonic wave, microwave and high temperature (300℃, 500℃, 800℃)did not significantly affect P solubilization.