黑背山小流域保护性耕作防治坡耕地水土流失效应的研究  

Effects of Conservation Tillage on Soil and Water Loss from Sloping Farmland in Heibeishan Watershed

作　　者：张艳君 

机构地区：[1]黑龙江省农垦牡丹江管理局水务局,黑龙江密山158308

出　　处：《水土保持通报》2012年第1期103-105,共3页Bulletin of Soil and Water Conservation

基　　金：国家农业综合开发东北黑土区水土流失重点防治工程项目

摘　　要：通过坡面径流小区试验,对黑背山小流域2009年和2010年5—8月径流小区径流量、侵蚀量和养分流失量进行了研究。结果表明,在天然降雨条件下,各径流小区的径流量、侵蚀量和养分流失量具有相似性,从大到小依次为裸地、垄作区田、等高垄作、地膜覆盖和等高深松。与裸地小区相比,保护性耕作措施可减少小区径流量29.8%～63.3%,减少侵蚀量64.6%～96.6%,减少全氮流失量54.0%～89.5%,减少全磷流失49.4%～92.2%。说明保护性耕作措施具有很好的保持水土和减少养分流失的作用。Through runoff plot experiment on slope,runoff,erosion and nutrient loss in Heibeishan watershed from May to August in 2009 and 2010 were studied.Results indicated that runoff,erosion,and nutrient loss from runoff plots under natural rainfall condition had a certain similarity.They were in the decreasing order of bare land,ridged-furrow,contour listing,film mulching,and equal-height deep loosening.Compared with the bare area,the conservation tillage could reduce runoff by 29.8%~63.3%,soil erosion by 64.6%~96.6%,nitrogen loss by 54.0%~89.5%,and total phosphorus loss by 49.4%~92.2%.This suggests that conservation tillage can play very good roles in conserving soil and water and reducing nutrient loss.

关 键 词：保护性耕作 坡耕地 径流量 侵蚀量 黑背山小流域 

分 类 号：F301.21[经济管理—产业经济]