添加化学改良剂的砂质盐碱土入渗特征试验研究  

The Studies of Infiltration Characteristics on Sandy Saline Alkali Soil by Chemical Amelioration

作　　者：王春霞[1,2] 王全九[2] 吕廷波[1] 庄亮 

机构地区：[1]石河子大学,新疆石河子832000 [2]西安理工大学水资源研究所,西安710048 [3]新疆水利水电科学研究院,乌鲁木齐830049

出　　处：《水土保持学报》2014年第1期31-35,共5页Journal of Soil and Water Conservation

基　　金：国家科技支撑计划项目"干旱区膜下滴灌农田盐分调控与微咸水利用技术研究"(2007BAD38B01);石河子大学高层次人才引进科研启动基金项目(RCZX201129);新疆维吾尔自治区科技计划项目(201130103-3);石河子大学重大攻关项目(gxjs2012-zdgg08)

摘　　要：采用表施PAM(0.01%,0.04%,0.08%)和旱地龙(75,150,375g/m2)下不同施量对其一维垂直积水入渗进行研究,结果表明,施加化学改良剂起到减渗作用,且随施量的增加累积入渗量与湿润深度均呈先降低后升高的趋势,PAM、旱地龙施量分别在0.04%,150g/m2时累积入渗量与湿润深度均达最小;土壤含水率在5-30cm土层较高且稳定,相应的最大脱盐区则出现在10-22.5cm土层内,PAM施量在0.04%,旱地龙施量在150g/m2下土层的持水效率最高,盐分淋洗总量最大。In the process of one-dimensional infiltration on applied chemical amelioration, experiment designed surface application（PAM dosage was 0.01%, 0.04% and 0.08%, respectively Handilong dosage was 75, 150, 375 g/m2 ）. The results showed that chemical amelioration played a role of reducing infiltration, cumulative infiltration and wetness depth showed a trend which first decreased and then increased with the increase of the application amount of chemical amelioration. And cumulative infiltration and wetness depth were lowest, highest in soil holding water efficiency and biggest in salt leaching amount with 0.04% PAM and 150 g/m2 Handilong. The soil moisture content was stable in 5--30 cm soil layer, accordingly the largest desalination region in 10--22.5 cm soil layer.

关 键 词：化学改良剂 积水入渗 水盐运移 砂质盐碱土 

分 类 号：S156.5[农业科学—土壤学] S157[农业科学—农业基础科学]