水土保持学报2012，Vol.26Issue(5)：103-107,5.
磷细菌筛选及其对土壤无机磷转化的影响
Screening of Phosphorus Solubilizing Bacteria and Its Effects on Transformation of Soil Inorganic Phosphorus Fractions
摘要
Abstract
There were 86 strains of phosphate-solubilizing bacteria PSB isolated from the plant rhizosphere soil and plant root in paddy soil,meadow soil,black clay soil and lime soil.After 3-day incubation in a liquid medium,the soluble P in the cultures of strains was 4.2~387.3 mg/L,and there was significant negative correlation between pH and the soluble P in the cultures of strains(R2=0.621 6).One strain of PSB(HCW115) was used in pot experiment and result showed that the dry weight and phosphorus uptake of the PSB treatment corn seedling were respectively increased by 37.5% and 40.2%,compared with control,the difference was significant.The PSB had no effects on transformation of Al-P,Fe-P and O-P of the soil.The PSB promoted the transformation of insoluble calcium phosphate in soil to available phosphorus and the content of Ca2-P,Ca8-P,Ca10-P of PSB treatment soil were respectively reduced by 74.9%,12.3% and 1.51% compared with the original soil.关键词
磷细菌/土壤/玉米/无机磷组分Key words
phosphate-solubilizing bacteria/soil/corn/inorganic phosphorus fractions分类
农业科技引用本文复制引用
于群英,马忠友,汪建飞,卫林..磷细菌筛选及其对土壤无机磷转化的影响[J].水土保持学报,2012,26(5):103-107,5.基金项目
科技部星火计划项目 （）
安徽省科技攻关项目 （）
蚌埠市科技局项目 （）
安徽科技学院重点学科项目 （）
