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滴灌是一种年青的灌水技术,它从形成到现在只有20多年的历史。根据1982年4月在印度新德里召开的国际会议上统计的资料,全世界共有滴灌面积500万亩(不包括中用),其中美国约占280万亩。滴灌具有省水、灌溉质量好,促使高产优质等优点。其缺点是造价高,易堵塞,因此,被人们称为昂贵的灌水技术,严重地影响了滴灌技术的推广应用。
Drip irrigation is a young irrigation technology, it has only been formed from the history of more than 20 years. According to the statistics of the international conference held in April 1982 in New Delhi, India, drip irrigation has a total area of 5 million mu (excluding middle use), of which the United States accounts for about 2.8 million mu. Drip irrigation with water, irrigation quality is good, to promote high yield and quality advantages. The disadvantage is the high cost, easy to plug, therefore, is called expensive irrigation technology, has seriously affected the popularization and application of drip irrigation technology.