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鱼池育苗时的追肥,如果采用全池泼洒,肥效虽快,但作用时间短,许多尚未完全溶解的微小颗粒,易被鱼苗吞食而引起中毒,降低成活率。如果将化肥装入编织袋内,让其自然溶解扩散,不仅肥效稳定,成本低,劳动强度轻,而且能不断为浮游动、植物提供必要的营养元素,促进其生长繁殖,为鱼苗提供大量的适口天然饵料,提高鱼苗育成率。1.挂袋时间宜选晴天上午9点至下午4点进行,这段时间光照强、气温高,浮游动、植物利用肥料
Fish pond nursery top dressing, if the Quanchiposa, fertilizer efficiency is fast, but the role of time is short, many have not yet completely dissolved in the tiny particles, easily swallowed fish and poisoning, reducing survival rate. If the chemical fertilizer into the bag, let it dissolve naturally spread, not only stable fertilizer efficiency, low cost, light labor intensity, and can continue to plankton, plants provide the necessary nutrients to promote their growth and reproduction, provide a large number of fry Paw natural food, improve fish breeding rate. 1. Hanging time should be sunny at 9 o’clock in the morning to 4 o’clock in the afternoon, strong light during this time, the temperature is high, floating, plants use fertilizer