Drip irrigation is the most water-saving irrigation technology with high efficiency. However, its expensive system cost seriously restricts extension and utilization of the technology.
滴灌是目前世界上最为节水的高效灌溉技术，但其昂贵的系统成本严重制约着该技术的推广应用。
The key problem needed to be solved in water saving agriculture is to increase the utilization efficiency of rainfall and irrigation.
提高自然降水和灌溉水利用效率是节水农业要解决的中心问题。
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