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罗非鱼、革胡子鲶都是非洲热带鱼类,它们繁殖力强,抗病力高,生长速度快,越来越为水产养殖人员所重视。但它们对低温耐受力不强,在自然条件下,不能在我地安全过冬,其致死阀值罗非鱼为12—13℃,革胡子鲶7—8℃。越冬保种是促进生产发展的关键。本文简单介绍几种越冬方法,供同行参考。 1、塑料棚土池越冬:选择地势低,水源好,背风向阳,土质肥沃保水保肥的地方建池。面积0.1—0.2亩,东西向,长方形,水深2米以上,水面应低于地平面,池壁高出地面15—25厘米。池上用竹或木架“人”
Tilapia, leather catfish are tropical African fish, their reproductive ability, high disease resistance, fast growth, more and more for aquaculture personnel attention. However, their tolerance to low temperature is not strong, and they can not safely live in winter under the natural conditions. Their lethal threshold is 12-13 ℃ for tilapia and 7-8 ℃ for leather beard catfish. Overwintering conservation is the key to promoting the development of production. This article briefly introduces several methods of winter, for peer reference. 1, plastic shed soil pool overwintering: choose low-lying, water is good, leeward sunny, fertile soil water and fertile place to build the pool. Area of 0.1-0.2 acres, east-west, rectangular, water depth 2 meters above the surface should be lower than the water, the pool wall 15-25 cm above the ground. Pool with bamboo or wooden “people”