植茶年限对土壤有机无机复合性状的影响  

Effect of Planting-year of Tea on Soil Organic-mineral Complex Status

作　　者：夏建国[1] 高福丽[1] 凌静[1] 吴德勇[1] 王昌全[1] 

机构地区：[1]四川农业大学资源环境学院,四川雅安625014

出　　处：《土壤通报》2010年第6期1399-1403,共5页Chinese Journal of Soil Science

基　　金：国家科技支撑计划项目(2008BAD98B05);四川农业大学双支计划项目(2009)资助

摘　　要：对不同种植年限茶园土壤有机无机复合状况及结合态腐殖质组成变化特征进行了研究。结果表明,土壤有机碳含量、重组有机碳含量以及土壤有机无机复合量随着植茶年限的增加而增加,而复合度下降,这一结果与土壤有机质的来源及移动性的差异有关。自然土壤植茶后,茶园土壤各结合态腐殖质含量明显提高,且各结合态腐殖质的绝对含量为紧结态腐殖质>松结态腐殖质>稳结态腐殖质,松结态腐殖质和紧结态腐殖质构成了复合态有机质的主体。随着植茶年限的延长,松结态腐殖质的相对含量增加,紧结态腐殖质的相对含量则表现为减少,土壤腐殖质松/紧比值增加。土壤有机无机复合状况及腐殖质结合形态与土壤养分之间存在相关关系,是表征土壤肥力演变的重要指标。The soil organic-mineral complex status and humus combined forms in tea garden of different planting-year were studied.The results showed that the content of soil organic carbon,content of heavy soil organic carbon and soil organic-mineral complex quantity were increased obviously with planting-year increasing and the degree of soil organic-mineral complex was decreased.This result was consistent with the source of soil organic matter and differences of mobility.After planting tea in natural soil,the contents of all combined forms humus were increased obviously,and the order of their absolute contents was： tightly combined humusloosely combined humusstable combined humus.The loosely and tightly combined humus accounted for most of organic matter in complex.Following the increment of tea planting-year,the ratio of loosely to tightly combined humus and the relative content of loosely combined humus were increased while the relative content of tightly combined humus was decreased.Correlation analysis showed that soil organic-mineral complex status and humus combined pattern were positively correlated with soil fertility,so they could be used as index to mark soil fertility.

关 键 词：茶园土壤 种植年限 有机无机复合状况 结合态腐殖质 

分 类 号：S153.3[农业科学—土壤学] S153.622[农业科学—农业基础科学]