1.改善生长环境秋季,随着鱼种的生长,摄食量增大,水中饵料生物减少,有害物质积累增多,水质老化,溶氧降低,对鱼种生长会带来一定影响。所以,需要调节水质以改善水体环境。一是换注新水,每次换水量约为原池水量的1/3到1/2。二是及时施肥“养水”,秋季气温适宜,水温变化较小,有利 1. To improve the growth environment In autumn, with the growth of fish species, food intake increased, biological reduction of water bait, harmful substances increased accumulation, aging water, dissolved oxygen decreased, will have a certain impact on the growth of fish species. Therefore, the need to adjust the water quality to improve the water environment. First, for new water, each change of water about the original pool of water 1/3 to 1/2. Second, timely fertilization “water”, autumn temperatures suitable, small changes in water temperature, favorable