对虾具有生长快、养殖周期短、产量高和经济价值大等特点,是出口换取外汇的重要水产品。目前各地对虾精养池一般采用单一品种养殖,因此饵料利用率低,各种饵料的饵料系数偏高,如豆饼、花生饼喂养对虾的饵料系数为4,短齿蛤、蓝蛤为18～20,小杂鱼为7～8。实际上有相当大的一部分饵料散失沉积在水体中得不到充分利用。池中大 Shrimp with fast growth, short breeding cycle, high yield and economic value and other characteristics, is an important export of foreign exchange in aquatic products. Currently, shrimp culture ponds are generally cultivated in a single species. Therefore, the utilization rate of bait is low, and the bait coefficient of various bait is high. For example, the bait coefficient for shrimp cake and peanut cake feeding shrimp is 4, and that of short clams and blue clams is 18-20 , Small trash 7 to 8. In fact, a considerable part of the loss of sediment deposition in the water can not be fully utilized. Large pool