茶叶科学Issue(2)：129-136,8.
不同类型茶园土壤团聚体组成特征及稳定性研究
Composition and Stability of Soil Aggregates among Different Soil Types of Tea Garden
摘要
Abstract
Based on the field survey and laboratory analysis, the soil aggregate composition and stability characteristics in five soil types (yellow soil, red earth, moisture sandy soil, alpine meadow soil and purple soil) of tea garden in Wuyishan city were investigated. The results showed that the contents of soil macro-aggregates decreased with soil depth, but micro-aggregates increased correspondingly in the five soil types of tea garden. The contents of soil macro-aggregates (>5 mm) were highest, accounting for 18.07%-89.23% of the total in yellow soil, alpine meadow soil and purple soil, the soil micro-aggregates (<0.25 mm) were the highest, accounting for 37.16%-63.91%of the total in red soil and moisture sandy soil. The proportion of R0.25 (water-stable aggregate>0.25 mm ) was between 36.08%and 97.23%(sample means 73.60%). The mean weight diameter (MWD) and geometric mean diameter (GMD) of soil aggregates in alpine meadow soil of tea garden were significantly higher than those in other soil types, followed by those in yellow soil and purple soil, the lowest was in moisture sandy soil. The fractal dimension (D) changes in the opposite trend simultaneously. The soil aggregate composition and stability were significantly correlated with soil organic carbon, total N, total P, soil bulk density, soil porosity, sand and silt, but not significant correlated with C/N, total K, pH value and clay.关键词
土壤类型/茶园/土壤团聚体/团聚体稳定性Key words
soil type/tea garden/soil aggregates/aggregate stability分类
农业科技引用本文复制引用
王峰,陈玉真,尤志明,吴志丹,江福英,陈芝芝,翁伯琦..不同类型茶园土壤团聚体组成特征及稳定性研究[J].茶叶科学,2014,(2):129-136,8.基金项目
国家茶产业体系宁德站(CARS-23-9)、福建省属公益类科研院所基本科研专项(2011R1014-5)、福建省农业科学院科技创新团队项目(STIT-Ⅰ-0302；STIT-Ⅰ-0305)、福建省星火计划 （CARS-23-9）
