河北省农业灌溉咸水利用机理研究

Hebei Agricultural Irrigation Water Use and Potential Technical Analysis

通过对河北省平原区咸水分布情况、典型区咸水的盐度、碱度计算、咸水灌溉条件的实验研究、咸淡水混合灌溉技术分析,河北省咸水灌溉矿化度应控制在3.0g/L以下。在矿化度大于3.0g/L的咸水区,将两种矿化度不同的灌溉水混合使用,目的是降低灌溉水的含盐量或改变其盐分组成。咸淡水混合灌溉在提高灌溉水水质的同时,也增加了可灌水的总量。结合河北省近年来开展咸淡水混合灌溉实践,在咸水区开展咸淡水混合灌溉,充分利用咸水资源,即减少淡水的开采量,而且对改善地下水超采取的生态环境也发挥了重要作用。

The Hebei Plain area distribution of water, a typical area of water salinity, alkalinity calculation, water irrigation experimental study of mixed salt and fresh water irrigation techniques,irrigation water salinity in Hebei Province should be controlled In the 3.0 g/L of the following. In the salinity of the water area larger than 3.0,two different salinity of irrigation water mixed with the aim of reducing the salinity of irrigation water or salt to change its eomposition. Mixed salt and fresh water irrigation to improve the water quality of irrigation water,it also increases the total amount of water. Hehei Province in recent years to carry out combination of salt and fresh water mixed irrigation practices,water in the area of mixed salt and fresh water irrigation, to make full use of salt water, that is, reducing the fresh water production, but also to improve its ecologi- cal environment of the ultra-taking also played an important role.