期刊
PLANT SOIL AND ENVIRONMENT
卷 58, 期 9, 页码 429-434出版社
CZECH ACADEMY AGRICULTURAL SCIENCES
DOI: 10.17221/326/2012-PSE
关键词
acidification; aluminum; ammonium; charge balance; tea gardens
类别
资金
- National Natural Science Foundation of China [30872009]
- Knowledge Innovation Program Foundation of the Chinese Academy of Sciences [KZCX2-YW-438]
- Jiangsu Graduate Student Innovation Program [CXZZ11_0667]
Solution culture experiments were conducted and the protons released were measured with an automatic titration system to determine the main factors affecting proton release by tea roots. Results indicated that the higher were the cation concentrations, the more protons were released from the roots, suggesting that tea roots took up a large amount of cations during growth, and then released protons to maintain charge balance of the plant body. The amount of protons released from tea roots at controlled pH was much higher than that in the treatments with uncontrolled pH. Stepwise multiple linear regression analysis showed that both NH4+ and Al(III) played distinct roles in proton release by tea plant roots. The uptake of Al(III) and NH4+ and subsequent release of protons may be an important mechanism for soil acidification in tea gardens.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据