养殖河蟹见效快、收益高,但池塘养蟹往往有部分蟹栖居在离开水体的洞穴里,不能正常摄食和脱壳生长。该类蟹规格小、色泽黑、口味差、经济价值极低,这种蟹通常称为“懒蟹”、“洞蟹”,影响河蟹的养殖效益。1产生“懒蟹”的主要原因“懒蟹”的产生,并非是河蟹的蟹种趋懒,它主要是 Aquaculture crab quick, high income, but the pond crabs often have some crabs dwelling in the water leaving the cave, can not normal feeding and shelling growth. The crabs are small in size, dark in color, poor in taste and extremely low in economic value. Such crabs are often called “lazy crabs” and “crabs” and affect the breeding benefits of crabs. 1 produce “lazy crab” the main reason “Lazy crab” is not crab larvae, it is mainly