姜堰市系典型的人多地少、后备资源约束型地区。近年来 ,市、乡、村三级通过多途径投资 ,将全市所有的土面灌渠全部改建成混凝土硬质结构。既比原来减少用地 1 3 ,节省了护渠、除草等用工 ,又能避免水的渗漏 ,加快水流速度 ,有效地节约灌溉用水 ,降低农本。在此基础上 ,张甸、 Jiangyan City Department of typical people less, reserve resources constraints area. In recent years, the city, township and village levels through all the ways to invest, all the city’s soil surface irrigation ditch all converted into concrete hard structure. It will not only save land, weeding and other work, but also avoid leakage of water, speed up the water flow rate, effectively save irrigation water and reduce agricultural capital. On this basis, Zhang Austin,