Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Rhizosphere pH of Pinus yunnanensis Franch.and Rhizosphere pH of P.yunnanensis Seedlings at Different Phosphorous Rates

DAI Kai-jie 1,2,SHEN You-xin 1,3*,ZHOU Wen-jun1,DENG Yun4,LI Yang-ping1,FU Jie5 (1 Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla,Yunnan 666303,China;2 Central South Forestry University,Changsha 410004,China;3 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China;4 School of Life Science,Yunnan University,Kunming 650091,China;5 Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China)  
The rhizosphere pH value of Pinus yunnanensis Franch.in the P.yunnanensis forests at different ages of the stands located in the red-soil regions of central Yunnan province,and the rhizosphere pH value of P.yunnanensis seedlings treated with different phosphorus rates were measured to study rhizosphere pH of P.yunnanensis and rhizosphere pH value of P.yunnanensis seedlings fertilized at different phosphorous rates.The results showed the rhizosphere and non-rhizosphere pH value of P.yunnanensis ranged within 3.49~3.79 under low-phosphorous circumstances;P.yunnanensis had a remarkably lower pH in its rhizosphere than that in its non-rhizosphere and the difference reached a extremely significant level,but there were insignificant differences among the rihizosphere pH value of P.yunnanensis in P.yunnanensis forests of different age groups;the P.yunnanensis seedlings could lower its rhizosphere pH and its pH-decreasing capacity increased with the phosphorous rates reduced.The results of this study about P.yunnanensis are different from the results of other studies about tree species other than P.yunnanensis to some extent and rhizosphere acidification is one of the effective responses of P.yunnanensis to low-phosphorous environments.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved