锡山市东北塘镇自1991年人工繁殖青虾成功以后，青虾养殖发展很快。1995年专池养殖32亩，养鱼池套养150亩，产青虾1750公斤，收入8．75万元。1996年又有了较大发展，专池养青虾162亩，营养青虾250亩，预计全年可上市青虾4000公斤，过冬虾种2500公斤，产值在50多万元。现在东北 Dongsitang Town, Xishan City, since 1991 after the success of artificial breeding of fresh shrimp, shrimp farming developed rapidly. In 1995, 32 mu of special ponds were raised and 150 mu of aquaculture ponds were housed. 1,750 kg of freshwater shrimp were produced and the income was 87,500 yuan. In 1996, there was a great development. 162,000 mu of freshwater prawn and 250 mu of freshwater mussel were planted in special ponds. It is expected that 4,000 kg of fresh shrimp and 2,500 kg of shrimp will be listed throughout the year, with output value over 500,000 yuan. Now northeast