论文部分内容阅读
之四在河蟹养殖全过程中,要积极从生态环境角度来防止疾病的发生,促使河蟹健康生长。正确地说,健康养殖的整个过程中,自始至终贯穿着“以防为主”,保持良好的生态环境,增强抗病能力,才能促进河蟹的健康生长,获得高产高效。一、建立良好的生态环境1.采用封闭式或半封闭式的养殖
Fourth, in the whole process of crab farming, we must actively prevent the occurrence of diseases from the perspective of ecological environment and promote the healthy growth of crabs. Correctly, the whole process of healthy farming, throughout the “prevention first”, to maintain a good ecological environment, enhance disease resistance in order to promote the healthy growth of crab, to obtain high yield and high efficiency. First, to establish a good ecological environment 1 using closed or semi-closed culture