GROUND WATER QUALITY IN THE INDUS PLAINS OF PAKISTAN AND ITS USE FOR CROP PRODUCTION DURING RECLAMATION OF SALINE-SODIC SOILS

The Indus Plains of Pakistan lies between 23°to 37°latitude and 61°to 76°longi-tude in the northern hemisphere. The total Canal Commanded Area (CCA) is about 13.50million hectares of which 11.21 million hectares are cultivated. At present, 103 millionacre-feet river flow is diverted into irrigation canals. In addition, 42 million acre feet of thegroundwater are being pumped through 257697 tubewells to supplement the canal supplies.

巴基斯坦印度河平原地下水质量及其在盐碱土开发中对作物产量的影响

巴基斯坦印度河平原位于北半球纬度23°到37°,经度61°到76°的范围。可灌溉面积约1350万公顷,其中1121万公顷已经开垦。目前有体积为1.03亿英亩英尺的河水被引入灌渠,另外还通过257697个管井提取4200万英亩英尺地下水补充到灌渠。渠道灌溉水的质量是世界上最好的,但抽取的地下水中,有50%是有害的。