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前言低压管道输水灌溉是一项节水灌溉新技术,它以管道代替沟、渠输送低压水流到田间,可以有效地防止输水损失,提高水的利用率.研究证明,采用低压管道输水与明渠相比可节水30%以上,少占地1%～2%,同时输水快、效率高、节劳力、省时间、管理运用方便.管道是低压输水灌溉系统中的主要组成部分,其投资占总投资的60%～70%.管材短缺、价格昂贵制约着管道输水灌溉技术的发展.管灌技术的攻关任务就是研制价廉质优、经久耐用、施工方便的系列化、规格化低压输水管材.近几年来各地各部门先后研制出薄壁PVC塑料管、双壁波纹塑料管、内衬塑膜外护圬工管及地埋塑料软管等,但缺少耐用、价廉的地上和地埋软管。NG涂塑软管是省灌溉防尘工程技术联合公司与泰兴县黄桥泰兴塑料二厂联合研制成功的.
Introduction Low-pressure pipe water conveyance is a new technology of water-saving irrigation, which uses pipe instead of ditches and canals to transport low-pressure water to the field, which can effectively prevent water loss and improve water utilization efficiency.Research shows that the use of low-pressure pipe water Compared with open channel, it can save more than 30% of water and less than 1% ~ 2% of occupied area, meanwhile it has the advantages of fast water delivery, high efficiency, labor saving, time saving and convenient management and application. The pipeline is the main component of low pressure water delivery irrigation system , Its investment accounted for 60% to 70% of the total investment.Physical shortage, high price restricts the development of pipeline irrigation technology.The key task of pipe irrigation technology is to develop a series of low cost, high quality, durable, easy construction, Standardization of low-pressure water pipe.In recent years, various departments have developed a thin-walled PVC plastic pipe, double-walled corrugated plastic pipe, plastic pipe lined with plastic outer tube and buried hose, but the lack of durable, the price Cheap ground and buried hose. NG coated plastic hose is a joint project of provincial irrigation and dustproof engineering and Taixing Huangqiao Taixing Plastic Factory jointly developed.