应用生态学报2016，Vol.27Issue(10)：3264-3272,9.DOI:10.13287/j.1001-9332.201610.030
退耕植茶地土壤团聚体及其无机磷组分分布特征
Characteristics of soil aggregates and inorganic phosphorus fractions in soils returned from cropland to tea
摘要
Abstract
With soils returned from cropland to tea planting for different ages (2-3,9-10 and 16-17 years old) as the object,and the nearby cropland soil as the control in Zhongfeng Township,Mingshan County,Ya'an,Sichuan Province,field investigation and laboratory analysis were combined to investigate the characteristics of soil aggregates and inorganic phosphorus fractions in response to the returning from cropland to tea.The particle size of ＞2 mm was the dominant aggregate size for the cropland and tea soils.With the increasing age,soil aggregate content of ＞5 mm particle size increased,while that of ＜5 mm particle size decreased gradually.In the earlier ages,for the mean mass diameter (MWD) and the geometry mass diameter (GWD),there was no significant difference between the cropland and tea soils.The MWD and GMD for the tea soils of 9-10 years and 16-17 years increased with the increasing age and were higher than those of the control.Compared with the cropland,the tea soils showed higher contents of Al-P and Fe-P,and lower content of O-P.The content of O-P in different particle size of aggregates reduced with the increasing age,while that of Al-P and Fe-P increased with the increasing age.The contents of Al-P and Ca-P in the cropland and tea soils increased with the decrease of the particle size and reached the maximum value in the particle size of ＜0.25 mm.The highest content of Fe-P was observed in the particle size of ＜0.25 mm,followed by 2-5 mm and 0.25-0.5 mm.Besides,with the returning from cropland to tea planting,O-P gradually accumulated in smaller particle size and possessed higher content in the particle size of ＜2 mm.关键词
退耕植茶/土壤团聚体/团聚体稳定性/无机磷组分Key words
returning from cropland to tea/soil aggregate/aggregate stability/inorganic phosphorus fraction引用本文复制引用
吴雯,郑子成,李廷轩,刘涛..退耕植茶地土壤团聚体及其无机磷组分分布特征[J].应用生态学报,2016,27(10):3264-3272,9.基金项目
本文由国家自然科学基金项目(40901138)和四川省科技支撑计划项目(2013NZ0044)资助 This work was supported by the National Natural Science Foundation of China (40901138) and the Sichuan Science and Technology Support Project (2013NZ0044). （40901138）
