黄土丘陵沟壑区梯田地埂土壤崩解特性试验研究  

Soil Disintegration Characteristics of Terrace Hedgerows in Loess Hilly-gully Areas

作　　者：马笑[1] 朱首军[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100

出　　处：《西北林学院学报》2013年第4期21-25,共5页Journal of Northwest Forestry University

基　　金：国家十二五规划项目:梁峁丘陵沟壑区农田耕作及林草生物措施防蚀关键技术与示范(2011BA831805-02)

摘　　要：通过静水崩解试验研究梯田地埂植物篱的抗蚀性,分析地埂植物篱不同深度土壤的崩解量与根系状况,研究不同梯田地埂植物篱的抗侵蚀效果。结果表明:地埂植物篱可明显降低土壤崩解量,提高地埂抗蚀性;在无根系影响的对照光埂上,随着土层深度的增加,土壤容重随之增大,崩解量随之减小;在根系及密度的双重影响下,根系对崩解量的影响较大,崩解量随着有效根系数量的增多而减小,抗蚀性增强。Anti-soil erosion capabilities of terrace hedgerows were examined by static water disintegration test.The relationship between disintegrating quantity and plant roots in different soil depths was analyzed to understand the effects of different terrace hedgerows on anti-soil erosion ability.The results showed that terrace hedgerows could obviously decrease the soil disintegrating quantity and increase the anti-erosion ability of terrace ridges.In the control ridges without plant roots,with the increase of the soil depth,disintegrating quantity decreased for the increase of the soil density.Between the dual effects of root system and soil density,roots were more influential than soil density,disintegrating quantity decreased with the increase of the number of effective roots,and the anti-erosion capability increased.

关 键 词：崩解 梯田地埂 土壤抗蚀性 

分 类 号：S157.32[农业科学—土壤学]