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让节水成为全民行动 严守“红线”倒逼用水方式转变

2018-03-22 16:11:02    新华网

加强用水监控。完成国家水资源监控能力建设项目,基本建成重要取水户、重要水功能区和大江大河省界断面三大监控体系,实现全国75%总许可水量的在线监控,中央、流域、省三级平台互联互通。

按照规划,到2020年,全国年用水总量控制在6700亿立方米以内,万元国内生产总值用水量、万元工业增加值用水量分别比2015年下降23%和20%,农田灌溉水有效利用系数提高到0.55以上。

拧紧“水龙头”,农业用水实现零增长

农业是用水大户,也是最有潜力的节水大户。

疏通渠道促节水。近两年中央投入232亿元,对248处大型灌区、262处重点中型灌区节水配套改造。畅通田间“毛细血管”,小农水重点县建设达到2450个县,基本覆盖主要农牧业县。

因地制宜抓节水。东北地区推进节水增粮,发展高效节水灌溉;西北地区合理控制灌溉规模,大力推广滴灌、喷灌等高效节水技术;华北压采地下水,发展低压管灌、喷灌和水肥一体化;南方地区以渠道防渗为主,经济作物种植区推广高效节水灌溉技术,提高化肥、农药利用效率。截至去年底,全国新增高效节水灌溉面积1亿多亩。用水少了,效益高了。由“浇地”变“浇作物”,彻底告别“大水漫灌”。

推进非常规水源利用。加大污水集中处理再生利用、海水直接利用和淡化、雨水集蓄利用等非常规水源利用力度。北京多用再生水,七成以上河湖补水来自再生水。天津精打细算水账,把水细分为5种:地表水、地下水、外调水、再生水和淡化海水,差别定价、优水优用,工业用水重复利用率达到92%。

全面加强工业、服务业和生活节水。重点实施高耗水工业行业节水技术改造,严控高尔夫、洗浴洗车等高耗水服务业,全国建成节水型企业、公共机构、小区等各类节水载体5.5万个。

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