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简述了农田水利机械化中灌溉技术的概念、特点及具有代表性的滴灌系统，并就其关键部件滴头的发展做了进一步的阐述。
The concept, characteristics and typical drip irrigation system of irrigation technology in farmland water conservancy mechanization are briefly described. The development of the dripper, the key component, is further elaborated.