行走式节水灌溉机具□关理水是人类赖以生存的不可替代的生命资源，也是社会发展的重要经济资源。水资源短缺会阻碍农业的增长，危及粮食及各种农产品的供应。节约用水已成为世界各国共同关注的重大问题。我国是水资源紧缺的国家之一，人均占有水资源２３００ｍ３，仅为世... Walking water-saving irrigation equipment □ Water is an irreplaceable life resource that mankind depends on and an important economic resource for social development. Water shortages can hinder the growth of agriculture and endanger the availability of food and agricultural products. Water conservation has become a major issue of common concern to all countries in the world. China is one of the countries where water resources are scarce, with per capita water resources of 2300m3, only for the world ...