论文部分内容阅读
1982年涿鹿县杨家坪林场在杏扁滴灌实践中,成功的试制成砌石砂砾过滤器。水的过滤是滴灌系统的主要问题,己引起各国的重视。目前,多数国家的滴灌都以管式滴头为主。但管式滴头进水孔小,螺旋状的水流通道狭窄,稍有杂物,极易堵塞。频繁的堵塞,严重地影响了滴灌的进行。因此,堵塞是滴灌中普遍存在而又难以解决的大问题。砌石砂砾过滤器的试制成功,很好地解决了这个问题。
In 1982 Zhuolu Yangjiaping Forest Farm apricot flat drip irrigation practice, the successful trial made masonry sand gravel filter. Water filtration is the main problem of drip irrigation systems and has drawn the attention of all countries. At present, drip irrigation is dominated by tube drip in most countries. However, the tubular dripper inlet hole is small, spiral water flow channel narrow, a little debris, easily blocked. Frequent clogging seriously affected drip irrigation. Therefore, clogging is a big problem that is ubiquitous and difficult to solve in drip irrigation. The successful trial of masonry grit filter solved this problem well.