近年来，各地河蟹育苗业发展迅猛，育苗过程中的疾病发生也越来越多，加之相当一部分育苗场技术力量薄弱，没有一套科学的病害防治措施，滥用药物，使育出的蟹苗质量差，甚至育苗失败，给育苗业带来了重大的经济损失，因此，如何科学地认识、提高育苗质量和成活率、有效地预防 In recent years, the rapid development of crab breeding industry around the seedlings in the process of growing more and more diseases, coupled with a considerable part of the hatchery technology is weak, there is no set of scientific disease prevention and control measures, abuse of drugs, Poor, and even nursery failure, nursery industry has brought significant economic losses, therefore, how to scientifically understand and improve seedling quality and survival rate, effectively prevent