不同植茶年限茶园土壤pH缓冲容量

应用生态学报

不同植茶年限茶园土壤pH缓冲容量

苏有健^1,2,王烨军¹,张永利¹,罗毅¹,孙力¹,宋莉¹,廖万有^1**

（¹安徽省农业科学院茶叶研究所, 安徽祁门 245600; ²浙江大学环境与资源学院, 杭州 310029）

出版日期:2014-10-18 发布日期:2014-10-18

Soil pH buffer capacity of tea garden with different planting years.

SU You-jian^1,2, WANG Ye-jun¹, ZHANG Yong-li¹, LUO Yi¹, SUN Li¹, SONG Li¹, LIAO Wan-you^1

(¹Institute of Tea Research, Anhui Academy of Agricultural Sciences, Qimen 245600, Anhui, China; ²College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China)

Online:2014-10-18 Published:2014-10-18

摘要/Abstract

摘要：

为探明长期植茶对土壤pH缓冲容量(pHBC)的影响，以安徽郎溪和祁门茶园为研究对象，研究了连续植茶10、15、20、25、30年的茶园土壤酸碱缓冲容量的变化及其影响因素.结果表明：酸碱滴定法适用于茶园土壤pHBC的测定，酸碱加入量与pH值在酸碱滴定曲线的特定突跃段(pH4.0～6.0)呈近似直线关系，可通过线性拟合方程计算pHBC.两地茶园土壤的pHBC随着植茶年限的增加均呈下降趋势，郎溪茶园和祁门茶园土壤pHBC的下降速率分别为0.10和0.06 mmol·kg^-1·a^-1.茶园土壤pHBC与阳离子交换量、土壤有机质、盐基饱和度、物理性质黏粒含量呈显著正相关，而与交换性酸总量及交换氢含量呈显著负相关.

Abstract:

In order to investigate the effects of longterm tea planting on soil pH buffer capacity (pHBC), the variation of pHBC and its influence factors were investigated in tea gardens of 10, 15, 20, 25 and 30 years in Langxi and Qimen of Anhui Province. The results showed that the acidbase titration method was suitable for the determination of soil pHBC of tea gardens. The amount of acidbase added had approximate linear relationship with soil pH value in specific section (pH 4.0-6.0) of acidbase titration curves, so the soil pHBC could be calculated by linear regression equation. Soil pHBC in the tea gardens from the two regions showed a downward trend with increasing the planting years, which decreased at rates of 0.10 and 0.06 mmol·kg^-1·a^-1 in Langxi and Qimen tea gardens, respectively. Soil pHBC had significant positive correlation with CEC, soil organic matter, base saturation and physical clay content, and significant negative correlation with exchangeable acid and exchange H⁺.

苏有健1,2,王烨军1,张永利1,罗毅1,孙力1,宋莉1,廖万有1**. 不同植茶年限茶园土壤pH缓冲容量[J]. 应用生态学报.

SU You-jian1,2, WANG Ye-jun1, ZHANG Yong-li1, LUO Yi1, SUN Li1, SONG Li1, LIAO Wan-you1. Soil pH buffer capacity of tea garden with different planting years.[J]. Chinese Journal of Applied Ecology.