膜下滴灌农田盐分运移情况调查与分析  

Investigation and Analysis of Salt Transfer Law under Membrane with Drip Irrigation in Field

作　　者：王家平[1] 吕新[2] 孙学[1] 殷波[1] 陈仲利[1] 张宏斌[1] 张伟[3] 

机构地区：[1]石河子大学农学院农学系,新疆石河子832003 [2]新疆生产建设兵团绿洲生态农业重点实验室,新疆石河子832003 [3]石河子大学农学院农学系耕作教研室,新疆石河子832003

出　　处：《新疆农业科学》2008年第4期682-686,共5页Xinjiang Agricultural Sciences

基　　金：国家科技支撑计划(2007BAC17806)"准噶尔盆地南缘荒漠化生态系统恢复与重建技术集成示范";石河子大学高层次人才科研启动资金专项(RCZX200611);国家自然科学基金项目(30760104);"十一五"国家科技支撑计划(2006BAD21B02-2);石河子大学"263"青年骨干教师资助计划(NX05008);石河子大学SRP项目

摘　　要：为详细分析新疆次生盐渍化棉田膜下滴灌盐分的运移规律,从不同生育期、垂直方向、水平方向、土壤质地四个角度对膜下滴灌盐分的运移进行了分析比对,初步得出：随着生育期的推后,各土层含盐量都有不同程度的加大;垂直方向盐分的积累在0-60 cm土层逐渐增加,60-100 cm土层盐分积累受膜下滴灌影响较小;水平方向背行中央土层处盐分积累最多,滴头处盐分积累最少;对于不同土壤质地,壤土中的盐分分布较粘土中的呈更规律的变化;分析认为定期大水漫灌洗盐、做好春复水工作是土壤脱盐的必要手段。研究将为新疆棉田土壤次生盐渍化防治提供理论依据。This paper mainly analysed salt transfer law under membrane with drip irrigation from four aspects,i.e.different postemergences,different soil texture,from vertical direction and from horizontal direction to study the salt transfer law under membrane with drip irrigation in the secondary salinization cotton field.The results showed that with the retardation of postemergences,the salt content in different soil layers were increased to different degree;the accumulation of salt in vertical direction was gradually increasely at the depth of 0～60 cm,but that at the depth of 60～100 cm was little increased;the accumulation of salt in horizontal direction at the center of open ground was greater than that of other position and the that under the drop point is the least;as for different soil texture,the variation of accumulation of salt in loam has more regularity than that in the clay;It was believed that washing salt with flooding irrigation and rewater in spring could effectively control the secondary salinizati on in cotton field.

关 键 词：膜下滴灌 盐分运移 调查分析 

分 类 号：S156[农业科学—土壤学]