摘要
在5种保护性耕作法与传统耕作法连续4 a的田间对比试验研究的基础上,对比分析了不同耕作措施对黄土高原旱地表层土壤理化性状的影响,结果表明:免耕秸秆覆盖与其它处理相比,具有降低表层土壤容重、增加土壤总孔隙度、提高土壤饱和导水率、提高土壤有机质的作用,可作为保水保肥、改良土壤的耕作措施,在黄土旱地大力推广。
Basing on the research of conservation tillage experiment in the semi-arid areas of the Loess plateau from 2001 to 2005, different tillage methods influent to the physical and chemical characters of the soil surface were compared and evaluated. Results showed that the treatment NTS can decrease the soil bulk density, increase the soil porosity and the soil saturated hydraulic conductivity, and enhance the soil organic matter. The NTS has the best effect for holding capacity of water and fertilizer, can create a comfortable condition for the crops.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第6期207-211,共5页
Agricultural Research in the Arid Areas
基金
中澳合作项目ACIAR"提高甘肃黄土高原西部雨养农业系统生产力及其可持续性的研究"(LWR2/1999/094)
关键词
保护性耕作
土壤容重
土壤孔隙度
土壤饱和导水率
土壤有机质
conservation tillage
soil bulk density
soil porosity
soil saturated hydraulic conductivity
soil organic matter
