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坡耕地黄墡土结皮的理化性质分析
引用本文:吴发启,范文波.坡耕地黄墡土结皮的理化性质分析[J].水土保持通报,2001,21(4):22-24.
作者姓名:吴发启  范文波
作者单位:西北农林科技大学资源环境学院,
基金项目:国家科技攻关项目“高原台塬过渡区高产型粮果林发展研究(96-04-05-07)
摘    要:在实验和对比分析的基础上,讨论了黄Shan土结皮的一些主要物理化学性质特征。结果认为,结皮的形成是以细砂和粗粉砂为骨架,以小于0.01mm的细小颗粒填塞土壤空隙的一个物理过程,其腐殖质含量几乎与土壤相同,而碳酸钙含量则略低。结皮的坚实度与前期含水率呈负相关,与容重和厚度呈正相关,而容重与厚度间的关系较为复杂。

关 键 词:土壤结皮  物理化学性质  坡耕地
文章编号:1000-288(2001)04-0022-03
收稿时间:6/4/2001 12:00:00 AM
修稿时间:2001年6月4日

An Analysis on Physicochemical Characteristics of Crust in Loess Soil on Slope Farmland
WU Fa-qi and FAN Wen-bo.An Analysis on Physicochemical Characteristics of Crust in Loess Soil on Slope Farmland[J].Bulletin of Soil and Water Conservation,2001,21(4):22-24.
Authors:WU Fa-qi and FAN Wen-bo
Institution:The College of Resource and Environment, Northwest Sci Tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, PRC;The College of Resource and Environment, Northwest Sci Tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, PRC
Abstract:Based on experiments and comparing analysis, the physicochemical characteristics of crust above the loess soil is discussed mainly, and some results were obtained. Crust formation is a physical process that the framework formed by fine sand and coarse silt is filled by small grain(< 0.01mm). The content of humus is nearly same as that of soil while the content of CaCO3 is slightly lower. Crust hardness has negative relation with the water content of earlier stage, and has positive relation with bulk density and thickness. The relat ion of bulk density and thickness is more complicated.
Keywords:soil crust  physicochemical property  slope farmland
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