河套灌区节水措施与黄河下游农业可持续发展

The water-saving measures in Hetao irrigated district and the sustainable agricultural development of the lower reaches of the Huanghe River

摘要: 黄河灌区年超量引黄河水18.72亿m³3是造成黄河断流的重要因素之一。河套灌区节水措施及节水潜力主要有渠道衬砌年可节水22亿m³，改进灌水方式节水10%，建设节水型农田防护林年可节水1.47亿m³，重复利用总排干沟回归水年可节水3亿m³。

Abstract: The Hetao irrigated district draw water from the Huanghe River over 1.87 billion cubic meter per year which is one of important cause of the Huanghe River dring up.There are some measures of saving water and saving water potential in the irrigated district.Water proof layers of canals would save water by 2.2 billion cubic meter per year,improving irrigated type would save water 10%,building farmland-shelter forest would save water by 0.147 billion cubic meter per year,reusing the escape canal water would save water by 0.3 billion cubic meter per year.