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鱼种是渔业生产高产高效的关键。鱼种的规格大小与膘体肥瘦,直接关系其越冬成活率。秋季是鱼种培育的关键时期,必须切实抓好如下几项工作。 1、改善水体环境,促进鱼种生长。进入秋季,随着鱼种的生长、摄食量增大,水中饵料生物减少,池中有害物质积累增多,水质老化,溶氧降低,对鱼种的生长带来较大影响,特别是一些个体较小的鱼种。由于竞食能力差,生长受到抑制,所以需要调节水质,改善池塘水体环境。其基本方法,一是更换池水,先将池中老水排出1/3—1/2,然后再加注新水。二是看水施肥,增加池中饵料生物。初秋时节,气、水温都较高,追施肥料以
Fish species is the key to high productivity and high efficiency in fishery production. Species size and size of body fat, directly related to its survival rate overwintering. Autumn is a critical period for the cultivation of fish species, we must earnestly grasp the following tasks. 1, improve the water environment, promote the growth of fish species. Into the fall, with the growth of fish species, food intake increased, the biological reduction of water bait, the accumulation of harmful substances in the pool, water quality aging, dissolved oxygen decreased, have a greater impact on the growth of fish species, in particular, some individuals more Small species of fish. Due to poor competition for food, growth is suppressed, so need to adjust the water quality, improve the pond water environment. The basic method, first, replace the pool of water, the first pool of old water discharge 1 / 3-1 / 2, and then add new water. The second is to see water fertilization, increase the pool of food organisms. Autumn season, gas, water temperature is higher, topdressing fertilizer