干旱地区农业研究2013，Vol.31Issue(2)：111-115,5.
不同土地利用类型植物根系与土壤抗蚀性关系研究
Study on relationship between plant roots and soil anti-erodibility of different land utilization types
摘要
Abstract
Based on the quantitative analysis of plant roots distribution characteristics of tilth soil under four land u-tilization types in Purple Soil, this paper revealed the internal relation between roots distribution and indicators of soil an-ti-erodibility, and made clear the influence mechanism of root on soil anti-erodibility. Results showed that root of minor diameter class, especially < 1 mm roots, had promotion effect on formation of > 0.25 mm & > 0.5 mm water stable aggregate . The length of < 0.5 mm roots had remarkable correlation with rate of structure deterioration, the reunion situation, < 0.001 mm granule content, and < 0.01 mm granule content. Due to the richest root content, the longest < 0.5 mm roots and the best soil granular structure, anti-erodibility of bamboo forest land was strongest. Roots of traditional farmland were scarcity, and the anti-erodibility of it was the weakest.关键词
根系长度/根系生物量/抗蚀性/团聚体/紫色土Key words
roots length/ roots biomass/ anti-erodibility/ aggregate/ purple soil分类
农业科技引用本文复制引用
吕刚,魏忠平,高英旭,李宏伟..不同土地利用类型植物根系与土壤抗蚀性关系研究[J].干旱地区农业研究,2013,31(2):111-115,5.基金项目
国家"十五"科技攻关计划项目(2004BA604A05) （2004BA604A05）
