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为了尽快恢复灾后水产养殖生产,弥补鱼类苗种不足,可用秋繁鱼苗培育鱼种,供来年成鱼养殖所需。现将其技术要点介绍如下:一、亲鱼培育。水退后要抓紧时间进行鱼池清整、消毒和亲鱼分塘。鲢、鳙亲鱼培育要施足基肥,适时追肥,泼洒豆饼浆;草鱼和团头鲂亲鱼培育要投足青饲料,并辅一定量的精饲料。培育期间通过加强水质调控、细喂精管等措施,保证水质溶氧充足和营养全面,以促进亲鱼性腺发育。二、产前准备。秋繁鱼种水温较高,技术难度大,必须做好各项准备工作,对繁殖全过程要周密计划,如检查亲鱼性腺发育情况和繁殖设备,选择凉爽天气,挑选经验丰富的操
In order to restore the post-disaster aquaculture production as soon as possible, to make up for the lack of fish seedlings, autumn fish fry can be used to cultivate fish species for the coming year adult fish farming needs. The technical points are as follows: First, broodstock breeding. After the water retreated to seize the time to fish pond cleaning, disinfection and brood pond points. Silver carp, silver carp broodstock cultivation should be applied enough to basal fertilizer, timely top dressing, splashed beans cake; grass carp and daddy broodstock breeding to vote enough green feed, supplemented by a certain amount of concentrate feed. During the period of cultivation, measures such as strengthening the control of water quality and fine feeding of fine tubes shall be adopted to ensure adequate dissolved oxygen and comprehensive nutrition in water quality so as to promote gonadal development of broodstock. Second, prenatal preparation. Autumn fish species higher water temperature, technical difficulty, we must make all preparations, the entire process of breeding to be carefully planned, such as checking gonadal development of broodstock and breeding equipment, choose the cool weather, select the experienced operation