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在鱼苗、鱼种饲养过程中,池中大量繁生水草,严重影响鱼苗、鱼种的生长,给生产带来很大危害。水草的危害主要有如下四个方面: 1、水草大量繁殖,消耗池中营养物质,造成浮游植物数量减少;同时,水草蔓延掩盖水面后,使浮游植物光合作用受到影响。从而造成鱼苗、鱼种天然饵料缺乏,降低其成活率。 2、水草大量繁生,在鱼种拉网时就会缠裹擦伤鱼体。 3、人工刈割除草,需要消耗大量的
In the fry, fish breeding process, a large number of plants in the ponds, severely affected the fry, fish species growth, to bring great harm to production. The main hazards of aquatic plants are the following four aspects: 1, aquatic plants multiply, consumption of nutrients in the pool, resulting in reduced phytoplankton; the same time, the spread of water covered the surface of the water, so that phytoplankton photosynthesis is affected. Resulting in fry, fish species lack of natural food, reduce their survival rate. 2, a large number of aquatic plants, fish species will pull wrapped in wounds when the fish. 3, artificial cutting weeding, need to consume a lot of