把蟹苗直接放在池塘养殖,成活率较低,而采用育成蟹种后再投放,则成为大幅度提高养成蟹的重要途径。一、培育蟹种的条件池塘培育蟹种,应以河蟹的生态习性、各生长阶段的不同食性和繁殖特性为依据,人为地为蟹苗;幼蟹和蟹种选择和提供最佳环境条件,使蟹苗至蟹种各阶段赖以生存、生长 The crab directly on the pond culture, lower survival rate, and then put into breeding crab species, it has become an important way to significantly raise crabs. First, the conditions for cultivating crab Pond nurturing crab species should be based on the ecological habits of crabs, the different stages of growth and feeding habits and reproduction characteristics, artificial crab; crab and crab species to choose and provide the best environmental conditions, Crab to crabs to rely on the various stages of survival, growth