|
| Effects of Iron-reducing bacteria on the transformation of phosphorus in vegetable red soils |
| Received:April 13, 2016 |
| View Full Text View/Add Comment Download reader |
| KeyWord:Iron-reducing bacteria;phosphorus species;transformation;vegetable red soil field |
| Author Name | Affiliation | E-mail | | LINGHU Rong-yun | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
Guangdong Institute of Eco-Environmental Technology, Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China | | | WANG Rong-ping | Guangdong Institute of Eco-Environmental Technology, Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China | rpwang@soil.gd.cn | | LIANG Jia-wei | Guangdong Institute of Eco-Environmental Technology, Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China | | | LIAO Xin-rong | Guangdong Institute of Eco-Environmental Technology, Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China | | | ZHAN Zhen-shou | Guangdong Institute of Eco-Environmental Technology, Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China | | | WU Yong-gui | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China | |
|
| Hits: 2939 |
| Download times: 3565 |
| Abstract: |
| Indoor simulation experiments were carried out to investigate the effects of exogenous iron-reducing bacteria(IRB) on the transformation of phosphorus(P) in vegetable red soils. The results shows that:labile P(including resin-P, NaHCO3-Pi and NaHCO3-Po) accounted for 10%~19% of total P, moderately stable P(including NaOH-Pi and NaOH-Po) was 35% and stable P(including D.HCl-Pi, C.HCl-Pi, C.HCl-Po and residual-P) 46%~55%. The introduction of IRB increased the contents of resin-Pi, NaHCO3-Pi and NaOH-Pi which are of high P activity but declined the contents of D.HCl-Pi, C.HCl-Pi and NaOH-Po which are of low P activity. In addition, the introduction of IRB increased soil pH and available P(Bray-P) content. Correlation analyses shows that:there is a negative correlation between pH and organic matter content, available P, resin-P and NaHCO3-Pi; the organic matter content has a significant positive relationship with available P, resin-P and NaHCO3-P; and there is also a significant positive correlation between available P and labile P. In summary, the introduction of iron-reducing bacteria changed the P species in the vegetable red soils, activated soil P and thus increased the content of soil active P. |
|
|
|
