1严格投放苗种的选择投放体质健壮、大小均匀、反应灵敏、营养基础好的虾苗。视虾池条件和养殖技术水平情况,放养密度控制在5万￣7万尾/667m2。建议放养合法途径引进的国外无特定病毒SPF虾苗,由于近几年亲虾近亲繁殖,种质明显退化,免疫抗病力普遍下降,从遗传育种的角度考虑,因 1 strict delivery of seed selection Put physical robust, uniform size, responsive, good nutrition based shrimp. Shrimp ponds depending on the conditions and the level of farming technology, stocking density control in 50,000 ~ 70,000 / 667m2. It is suggested that stocking SPF shrimp seedlings without specific virus introduced by legitimate means should be considered because of the inbreeding of broodstock in recent years and the obvious deterioration of germplasm and the general decline of immunity and disease resistance.