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井水养鱼,具有水源充足,灌水及时,无污染等优点。但井水水温低,含氧量少,大量灌入鱼池就会影响饵料生物和鱼类的生长。宁阳县水产站在多年的井水养鱼生产实践中,总结出了一套科学灌水方法,有效地避免了低温井水对饵料生物和鱼类的危害。其方法为: 1.灌水时间应选择在晴天下午2～4点气温较高时进行,并抬高井水出水口,实行远距离送水,使井水尽量多吸收一些热量和溶氧后再进入鱼池。据测定,此法可使进入鱼池的水温提高1—2℃。2.严格掌握灌水量,坚持浅水管理。
Well water fish, with sufficient water, irrigation timely, pollution-free and so on. However, the well water has low water temperature and low oxygen content, which can affect the growth of food organisms and fish in large quantities. Ningyang aquatic product station in many years of well water fish production practice, summed up a set of scientific irrigation methods, effectively avoiding the low-temperature well water on the food organisms and fish hazards. The method is as follows: 1. Irrigation time should be chosen sunny 2 to 4 o’clock in the afternoon when the temperature is higher, and raise the well water outlet, the implementation of long-distance water, so that the well water to absorb as much as possible after some heat and dissolved oxygen into the fish pond . It is determined that this method can make the water temperature into the fish pond 1-2 ℃. 2. Strict control of irrigation volume, adhere to shallow water management.