论文部分内容阅读
微灌是继喷灌之后出现的一种新的灌溉方法。它通过PE塑料管道系统及特制的灌水器，以较低的压力、较小的流量均匀而准确地将水直接输送到作物根部附近。当今世界水资源供需矛盾日益突出，微灌越来越受到人们的重视。美国是世界上微灌面积最大、发展最快的国家，其次是澳大利亚?
Micro-irrigation is a new irrigation method following sprinkler irrigation. It uses PE plastic pipe system and a special emitter to deliver water evenly and accurately to the crop roots with low pressure and low flow. The contradiction between supply and demand of water resources in the world today is increasingly prominent, and more and more people pay more attention to micro-irrigation. The United States is the world with the largest area of micro-irrigation, the fastest growing countries, followed by Australia?