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1989年2月,江苏省盐业水产养殖公司的科技人员,在东山实验场一面积为47亩的试验虾池中放入85公斤沙蚕,6月份用药物清池放虾苗时,沙蚕密度约1000只/米~2,
In February 1989, the scientific and technological personnel of Salt Aquaculture Company in Jiangsu Province put 85 kg of Nereis in a test shrimp pond with an area of 47 mu in Dongshan Experimental Station. In June, Density of about 1000 / m ~ 2,