微咸水灌溉条件下的土壤水盐动态变化研究  

Research on Dynamic Change of Soil Water-salt under Brackish Water Irrigation

作　　者：张亚哲[1] 高业新[1] 王建中[1] 张冰[1] 冯欣[1] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,石家庄050061

出　　处：《中国农村水利水电》2013年第1期49-54,共6页China Rural Water and Hydropower

基　　金：国家行业专项"地下水典型试验场科学观测与综合研究"资助(A09001)

摘　　要：河北衡水地区干旱缺水,淡水资源严重不足。水资源日益缺乏与粮食需求日益增多之间的矛盾尖锐。利用微咸水资源将成为缓解水资源危机的重要举措。国土资源部地下水科学与工程试验基地小麦微咸水灌溉试验为基础,对试验区作物种植整个生长过程中土壤含盐量和水分状况随时间的变化研究,探讨了微咸水灌溉对小麦产量的影响。结果表明,土壤水盐动态呈受灌溉和降雨影响的短期波动和受季节更替影响的长期波动;作物产量与灌水矿化度、灌水量、土壤初始含盐量和含水量等因素相关。在缺乏淡水的情况下,可以考虑使用3g/L左右的微咸水灌溉,而且不会引起小麦产量的显著下降。There is a serious drought in Hengshui, Hebei Province. The conflict between increasing shortage of water resources and food demand is increasingly sharp. The use of brackish water resources will become one of the important ways to alleviate the crisis of water resources. This paper is based on experiment of brackish water irrigation of wheat in groundwater science and engineering test base. For the test, it studies the change of soil salinity and moisture variation in the whole growth process of crop planting and discusses the effect of brackish water irrigation on wheat yield. The results show that dynamics of soil water and salinity were under the influence of short-term fluctuations of irrigation and rainfall fluctuations and long-term of season change. Crop production is re- lated to water salinity, irrigation amount, initial soil salt,water and so on. In the case of a lack of fresh water, it can adopt 3g/l of brackish water to irrigate and will not trigger the fall of wheat yield significantly.

关 键 词：微咸水 土壤水盐 土壤电导率 动态变化 

分 类 号：S275[农业科学—农业水土工程]