客土改良对碱土饱和导水率与盐分淋洗的影响  

Effects of Additional Soil Amount on Saturated Hydraulic Conductivity and Salts Leaching in Sodic Soil

作　　者：迟春明[1,2] 王志春[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,吉林长春130012 [2]中国科学院研究生院,北京100049

出　　处：《农业系统科学与综合研究》2011年第1期98-101,共4页System Sciemces and Comprehensive Studies In Agriculture

基　　金：中科院西部行动计划(编号:KZCX2-XB2-13);国家科技支撑计划(编号:2007BAD65B02-6);国家科技部"973"项目(编号:2007CB106800);吉林省与中国科学院科技合作高技术产业化专项资金项目(2007SYHZ0035)

摘　　要：为了探究客土改良方法对碱土理化性质的改善作用,采用室内模拟实验分析了沙土和黑土添加量对碱土饱和导水率和盐分淋洗的影响。结果表明:碱土饱和导水率与沙土或黑土添加量间存在极显著的线性关系,饱和导水率随沙土或黑土添加量逐渐增加而不断升高;碱土盐分淋洗效果随沙土或黑土用量的增加而增强,淋洗液电导率和pH随客土添加量的增加而降低;碱土淋洗液的电导率和pH随饱和导水率的升高而降低,淋洗液电导率和pH与饱和导水率间分别呈线性和幂函数关系。Bases on simulation experiments in laboratory,the effects of the amount of additional soil on saturated hydraulic conductivity（K10） of sodic soil,electrical conductivity（EC） and pH of leachates were investigated,and relationships between K10 and EC of leachates,K10 and pH of leachates were established.Results showed that K10 increases with the increments of additional soil amounts,and the relationships between them follow linear functions significantly;values of EC and pH of leachates decrease with the increases of additional soil amount;EC and pH values of leachates decrease with the increases of K10,the relationships between EC and additional soil amount and between EC and additional soil amount follow linear function and power function,respectively.

关 键 词：客土 沙土 黑土 碱土 饱和导水率 电导率 PH 

分 类 号：S156.4[农业科学—土壤学] S151.9[农业科学—农业基础科学]