不同灌溉定额对膜下滴灌棉花土壤盐分分布的影响研究  

Influence of Irrigation Quota on Distribution of Soil Salinity for Cotton under Mulched Drip Irrigation

作　　者：张金珠[1] 虎胆.吐马尔白 王一民[1] 吴争光[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《灌溉排水学报》2010年第1期44-46,共3页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(50669007);国家科技支撑计划项目(2007BAD38B01);新疆自治区科技攻关重大专项项目(200731137-1);新疆自治区水利水电工程重点学科基金项目

摘　　要：开展了不同灌溉定额对土壤盐分分布影响的试验研究。结果表明,灌溉定额越大,盐分运动和分布所受到的影响越大,盐分水平方向运动越远,相同距离处土壤盐分含量相对越低,垂直方向,土壤盐分向耕作层以下运移并发生聚积,毛管附近土壤盐分淋洗范围和淋洗程度均越大,远离毛管宽行距盐分聚集范围越大且较深。灌溉定额越小,浅层土壤盐分积盐率越高,毛管附近土壤盐分淋洗范围和淋洗程度均越小,远离毛管宽行距盐分聚集范围越小且较浅。Influence of distribution of soil salinity under different irrigation quota of cotton drip irrigation under film was researched from the existing cotton drip water law and impact factors. The results showed that the larger irrigation quota, the greater influence on salt movement and distribution, salt moved farther exercise in horizontal direction, soil salt content is relatively lower in the same distance, vertical direction, soil salinity was accumulated under the arable layer, the scope and extent of leaching soil salinity near the capillary were greater, the accumulation of salt greater and deeper where far from the capillary. The smaller irrigation quota, salt accumulation higher in surface soils, soil salinity leaching smaller near the capillary, the smaller and less aggregation far from the capillary.

关 键 词：膜下滴灌 棉花 灌溉定额 土壤盐分分布 

分 类 号：S274.1[农业科学—农业水土工程]