罗氏沼虾在长江中下游地区的养殖 ,一般池塘放苗养殖的时间都要在 5月上中旬 ,这是因为前期水温低及易受冷空气的影响 ,在 4月初室外水温还不到 15℃ ,虾苗不能直接下池培育。利用简易塑料大棚进行苗种前期强化培育 ,对提高罗氏沼虾的单位产量及商品提前上市、增加经济效益起到 Macrobrachium rosenbergii breeding in the middle and lower reaches of the Yangtze River, the pond pond in the general breeding time in mid-May, which is due to the low water temperature and vulnerable to cold air in early April outdoor water temperature is less than 15 ℃ Shrimp can not be directly under the pool cultivation. The use of simple plastic greenhouse pre-seed intensified breeding, to improve the production of Macrobrachium per unit of production and commodity market ahead of schedule, increase economic benefits played