摘要
应用田间长期定位试验,研究了5种耕作措施对东北农田黑土入渗速率的影响。结果表明,传统耕作为代表的平翻和旋松耕作的垄台容重最小,表层土壤稳定入渗速率高于其它3种耕作措施,分别为9.20 mm/min和7.31 mm/min。免耕垄台和垄沟的容重虽较高,但均具有较高的稳定入渗速率。在夏季进行垄沟深松少耕,可显著提高垄沟的稳定入渗速率。免耕和少耕是高效的水土保持耕作措施。
This study determined infiltration into soils on black farmland under different tillage systems by long-term experiment. The moldboard plough and rotary tillage being representative of conventional tillage systems induced a lowest bulk density in ridge. Surface stable infiltration rates under moldboard plough and rotary tillage were 9.20 and 7.31 mm/min, respectively, which were higher than the others. Although notillage induced a higher bulk density in ridge and furrow, it had a relatively high stable infiltration rate. Reduced tillage could significantly increase stable infiltration rate in furrow because it loosed the furrow in summer. These indicate that no-tillage and reduced tillage are effective tillage systems of soil and water conservation.
出处
《水土保持通报》
CSCD
北大核心
2007年第5期71-74,共4页
Bulletin of Soil and Water Conservation
基金
国家重点基础研究发展计划资助(2007CB407203)
关键词
黑土
耕作措施
容重
稳定入渗速率
black soil
tillage systems
bulk density
stable infiltration rate
