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１采取合理的养殖结构是提高效益的重要前提多年来,多数养殖户都是采取鱼蟹混养的方式,忽视了鱼、蟹在食性、生活习性等方面都有很大差别。混养存在以下几方面矛盾:一是水质要求肥瘦对立,水深、水温也不一样;二是饵料投喂品种、方式不同,且鱼争食较强;三是病害防治难以解决,部
1 to take a reasonable breeding structure is an important prerequisite to improve efficiency Over the years, most farmers are taking fish and crab polyculture approach, ignoring the fish, crab in the diet, habits and other aspects are very different. There are contradictions in the following aspects of polyculture: First, the water quality requirements of the opposite fat, water depth, water temperature is not the same; the second is feeding food varieties, different ways, and the fish compete strongly; third disease control difficult to solve,