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近年来,随着大水面河蟹养殖的发展,围网养蟹以其节省饲料和养成规格大、品质好而得到迅猛发展。根据目前的养殖情况来看,有不少围网养殖存在河蟹回捕率低,有的回捕率仅20％左右。现根据一些实际问题,分析围网养蟹回捕率低的原因,并介绍一些解决方法,供参考。 1 围网养蟹回捕率低的原
In recent years, with the development of large surface crab farming, seine crabs have been developed rapidly because of their large size and good quality of feed saving and cultivation. According to the current aquaculture situation, there are a lot of seine breeding there is a low recovery rate of crabs, and some capture rate of only about 20%. Now based on some practical problems, the analysis of the reasons for the low net return rate of cages in cages and introduce some solutions for reference. Seine crabs back to a low rate of recovery of the original