上世纪90年代中期起,青虾经过试养成功后,成为名优水产品养殖的主要品种之一,在稻田养殖生产发展中发挥了明显作用。随着养殖面积、产量的增加,青虾养殖中存在着生长缓慢、性成熟早的问题。6月放苗,8月即有一定比例的虾达到了性成熟,年底起捕时成虾规格偏小且有大量小规格青虾, Since the mid 90s of last century, after the success of trial cultivation, the freshwater shrimp has become one of the main varieties of aquaculture of famous aquatic products and has played an obvious role in the development of the aquaculture production in paddy fields. With the breeding area and yield increase, there is a problem of slow growth and sexual maturity in the cultivation of freshwater shrimp. In June Fangmiao, in August a certain percentage of shrimp reached sexual maturity at the end of the catch when the shrimp size is small and there are a large number of small-size shrimp,