唐河县位于我省西南部。全县年用水量1.5～1.8亿m~3,农业用水量占总用水量的90%以上,但灌溉水利用率只有30%左右,是农业耗用水多的主要原因。要实现“九五”和2010年远景目标,必须走节水农业之路。根据有关专家测算和该县节水灌溉工程建设的实践,如果采用渠道防渗,可减少渠道渗漏损失50%～90%,采用低压管道输水可节水20%～ Tanghe County is located in the southwest of our province. The county’s annual water consumption of 1.5 to 180 million m ~ 3, agricultural water consumption accounted for more than 90% of the total water consumption, but only about 30% of irrigation water utilization is the main reason for water consumption in agriculture. To achieve the “95” and the 2010 vision, we must take the road of saving agriculture. According to the experts’ calculations and the county’s practice of water-saving irrigation construction, channel leakage can be reduced by 50% ~ 90% if channel seepage prevention is adopted, and water loss by using low-pressure pipelines can be saved by 20% ~