1概况塘沽系天津市辖行政区，位于海河流域下游，成陆较晚，属于海相、陆相相互沉积而成的滨海平原。地势低洼，土质盐碱，受渤海影响，气候比内陆湿凉，季节性明显，属暖温带季风型大陆性气候。塘沽人民在以前多从事渔、盐业和织苇打草，农业生产发展缓慢，农民利用海河潮汐灌 1 Overview Tanggu Department of Tianjin Municipality, located in the lower reaches of the Haihe River Basin, into the continent later, belong to the marine, continental sediments deposited each other from the coastal plains. Low-lying, soil salinity, affected by the Bohai Sea, the climate is cooler than the inland, seasonal obvious, is a warm temperate monsoon-type continental climate. In the past, the people of Tanggu were engaged in fishing, salt industry and reed weeding. The agricultural production was developing slowly. Farmers used the Haihe River tidal irrigation