风沙半干旱区风沙土防风蚀技术研究  

Study on Anti-erosion Techniques of Aeolian Soils Semiarid Regions

作　　者：颜景波 王慧新 韩志松 姜涛 孙占祥[2] 何跃 于洪波 

机构地区：[1]辽宁省风沙地改良利用研究所,辽宁阜新123000 [2]辽宁省农业科学院,辽宁沈阳110161

出　　处：《安徽农业科学》2011年第5期2831-2833,共3页Journal of Anhui Agricultural Sciences

基　　金："十一五"国家科技支撑计划重点项目(2006BAD29B06);辽宁省科技攻关课题(2008207003)

摘　　要：针对风沙半干旱区风沙土易旱、易风蚀特性,开展了防风蚀技术研究。结果表明,农田防护林网主林带背风面距林缘1~6H处削弱风速约50%,随树高（H）倍数的增加效果递减;林网内扁杏//花生（间作）增强了花生裸茬抗风蚀能力,土壤防风蚀效果达90%;林网内玉米//花生（间作）玉米收获后秸秆站立（农田休闲期）玉米带完全不受风蚀,花生裸茬防风蚀效果达95%;林网内作物残体平伏覆盖防风蚀效果达120%,综合评价作物残体覆盖玉米秸秆站立的防风、保土和保水效果最佳。Aiming at the characteristics of drought-prone and wind erosion easily in aeolian soils semiarid regions,the study on anti-erosion techniques was carried out.The results indicated that wind speed reduced by 50%,which at the position of 1-6 H away from main belt leeward between farmland shelterbelt network and forest edge,and the effect decreased gradually with the increase of tree height.Flat apricot//peanut（intercropping） within the forest network enhanced the wind erosion resistance ability of peanut bare stubble,thereby,the erosion resistance effect reached 90%.Corn//peanut（intercropping） within the forest network,after corn were harvested,standing（field fallow）corn belt were not subject to wind erosion,the erosion resistance effect of peanut bare stubble was up to 95%;mulching crop residues reached to 120%.Finally,comprehensive evaluation was carried out for the effect of anti-wind,soil and water conservation when crop residues covered standing corn straw.

关 键 词：半干旱区 风沙土 防风蚀 水土保持 

分 类 号：X831[环境科学与工程—环境工程]