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平整土地与划小畦田是地面自流灌溉的基础 ,也是灌溉工程中投劳投资占很高比例的改善灌水条件的工程项目。只有土地平整、畦田规格科学 ,才能达到节水灌溉的目的 ,才能充分发挥灌溉水的有效利用率 ,充分提高灌溉水的水分生产率、劳动生产率 ,是节约灌溉用水的一项重要措施。平
Land leveling and paddocking are the basis of gravity irrigation on the ground and also a project that invests a high proportion of investment in irrigation projects to improve irrigation conditions. Only the formation of the land, science and scientific specifications, can reach the purpose of water-saving irrigation in order to give full play to the effective utilization of irrigation water, irrigation water to fully improve the water productivity and labor productivity, irrigation water is an important measure to save. level