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疏勒河灌区节水记——一个西北灌区的深度节水进行时


  从漫灌到滴灌:向节水型灌区迈进
  在玉门市昌马灌区,记者驱车来到位于疏勒河流域中部的饮马农场,只见绿色的田野一望无际,眼前的洋葱、西兰花等长势喜人。
  饮马农场隶属于甘肃省农垦集团公司,是甘肃省粮、棉、油的主产地之一。据饮马农场副场长赵富强介绍,农场内支渠、斗渠、农渠成网,灌溉面积近10万亩,农田涝可排、旱可浇,但由于田间渠道衬砌率低,跑冒渗漏水现象严重。
  “近年来,农场先后建设了12个高效节水(滴灌)项目。目前,每年正常投入使用的高效节水农田面积达3.5万亩左右。高效节水膜下滴灌和水肥一体化技术应用后,与过去大水漫灌相比,总体上可节水40%以上,亩均增加经济效益30%以上。”赵富强说,比如这片500亩的田地,以前大水漫灌需要耗水600-800立方米,现在滴灌用水量不到 ....

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