我国农村水利、灌溉河道纵横交错、分布广泛,农田冲集和生活污水补充了水体中的无机物和有机物,水体中浮游生物和水生植物大量繁殖和生长,鱼类增养殖潜力很大。加上河道一般水流缓慢,水位相对稳定等有利条件,非常适合拦网养鱼,是发展农村经济的一条很有潜力的门路。但在具体操作中,由于拦网选材、设置等方面的工作不 China’s rural water conservancy, irrigated river criss-crossing, widely distributed farmland Chong Ji and domestic sewage to supplement the inorganic and organic matter in water, plankton and aquatic plants in large numbers of breeding and growth, fish breeding potential. Coupled with the general slow flow of waterways, water level is relatively stable and other favorable conditions, is ideal for blocking fish, is a great potential for the development of rural economy. However, in the specific operation, due to block selection, setting and other aspects of the work not