三、青虾的苗种来源 目前人工养殖所用的青虾苗,一是人工繁育,二是采捕天然虾苗。现将人工繁育虾苗的方法介绍如下。 (一)亲虾的选留和蓄养 选作人工繁殖的亲虾,要求体形标准,体色纯正,肥满健壮,无病无伤,性腺发育较好,雌虾体长在6厘米以上,雄虾规模 Third, the source of freshwater shrimp seedlings used in the current artificial breeding of freshwater shrimp, one artificial breeding, the second is to capture natural shrimp. Now manual breeding shrimp methods are described below. (A) Selection and maintenance of broodstock Selected as artificial reproduction of broodstock, requiring body shape standards, body color pure, plump and robust, disease-free and harmless, good gonadal development, female body length 6 cm above, male Shrimp size