水土保持学报2012，Vol.26Issue(2)：234-240,7.
再生水灌溉对土壤主要盐分离子的分布特征及盐碱化的影响
Effects of Treated Wastewater Irrigation Strategies on the Distribution of Salt Contents in Soils Cultivated with Tomato and Cucumber
摘要
Abstract
A field experiment was designed to evaluate the effects of treated wastewater irrigation strategies on the distribution of salt contents in soils cultivated with tomato and cucumber.For tomato plots,irrigation with treated wastewater only increased the contents of Cl-and HCO-3 in the surface horizon of soil（0-10 cm）,other salt ions were leached to the deeper soil profile due to irrigation.The salt concentration in the whole soil profile was not significantly cumulative under different treated wastewater irrigation strategies.In the plots cultivating with cucumber,all the salt ions exclude HCO-3 increased in the surface of soil due to intense evaporation in the greenhouse.However,no obvious risk was measured for the salinization of soil ir-rigated with different treatments.Furthermore,after harvest,soil pH and SAR was not remarkablely affected by treated wastewater irrigation compared with freshwater,but the risk of soil alkalization still needed to be a concern due to the relatively high pH（8.0）.In conclusion,among all treatments,irrigation with freshwater in the important period（FWF） during the growth stage is an alternative strategy for regulating soil salinization and alkalization in the safe utilization of treated wastewater.关键词
再生水/灌溉/盐分离子/分布特征Key words
treated wastewater/irrigation/salt ion/distribution characteristics分类
农业科技引用本文复制引用
薛彦东,杨培岭,任树梅,苏艳平,李云开,方延旭..再生水灌溉对土壤主要盐分离子的分布特征及盐碱化的影响[J].水土保持学报,2012,26(2):234-240,7.基金项目
水利部公益性行业科研专项 （）
国家自然科学基金项目 （）
