浅层咸水灌溉对冬小麦和土壤安全性的研究  

Safety of winter wheat and soil using brackish water irrigation

作　　者：邵玉翠[1] 李悦[2] 盛福昆[3] 严晔端[2] 安玉钗 张余良[1] 

机构地区：[1]天津市农业资源与环境研究所,天津300192 [2]天津市水利科学研究所,天津300061 [3]天津市津南国家农业科技园区,天津300350

出　　处：《生态环境》2006年第6期1241-1245,共5页Ecology and Environmnet

基　　金：天津市科技发展计划项目(993121711)

摘　　要：主要研究利用浅层地下咸水灌溉冬小麦及土壤的安全性。试验采取3因素多水平组合设计，利用2．5-6．0g·L^-1不同矿化度咸水对冬小麦进行灌溉。试验结果表明：冬小麦产量与咸水矿化度呈负相关关系r=-0．8542、r=-0．8457，与咸水灌溉量呈正相关关系r=0．7487、r=0．7401。利用小于4．0g·L^-1咸水灌溉对土壤具有一定的脱盐作用，咸水矿化度为6．0g·L^-1时土壤中的盐分积累达到85．5％。矿化度5．0g·L^-1以上的咸水不宜直接灌溉农田，需经淡水与咸水调配后，矿化度在4．0g·L^-1以下方可灌溉农田。Winter wheat yield was negatively correlated with the mineralization of brackich water with r = -0.854 2, r= -0.845 7 and was positively correlated with the irrigation amount of brackich water with r =0.748 7, r =0.740 1. Irrigation with brackish water below 4.0 g·L^-1 had a desalinization to the soil. When irrigation with 6.0 g·L^-1 brackich water, the soil salinity increased to 85.5%. Brackish water with mineralization above 5.0 g·L^-1 was not suitable for irrigating farmland directly. It should be mixed with freshwater for mineralization below 4.0 g·L^-1 before irrigation.

关 键 词：咸水 灌溉 冬小麦 土壤盐分 灌溉量 

分 类 号：S273.4[农业科学—农业水土工程]