人为调节涨水过程促使家鱼自然繁殖的探讨

Study on the Promotion of Natural Reproduction of Domestic Fish by Regulating Water Rising

在自然情况下,家鱼产卵活动除要求适宜的水温条件外,还需要所处江河涨水的刺激。而人为调节涨水过程就是为满足其繁殖条件所采取的一种人为补救措施。

(1)Case studies are made in the Three Gorges Reservoir to learn the effects of regulatingwater rising on the natural reproduction of “domestic fish” in the mid-reaches of the Chang-jiang River.(2)According to practical survey,the relationship between amount of fry andfluctuation of water level is F=1.596+9.912H;and the relationship between water level andflux in Yichang station during last May to early June is H=47.374Q^(0.0582)-37.483.(3)Theproper time for water discharge in durations of artificial regulation is from last May to earlyJune;its proper amount is about 0.5m water rising per day,lasting for 4—6 days.(4)Areasonable control of water discharge in the Three Gorges Reservoir has no negative influen-ce on flood control,power generation and navigations.