First, organic fertilizer must be fully fermented. The temperature of fish ponds in spring is low, and the oxygen content in water is relatively abundant. Rational application of organic fertilizers is not only cost-effective, but also can achieve good breeding results. Fish ponds use organic fertilizers such as large excrement, livestock and poultry excrement, and must be fully fermented in advance. Organic fertilizers are fermented and decomposed, and organic matter is decomposed. When applied to fish ponds, the organic fertilizers can reduce the consumption of oxygen in the water and can be quickly absorbed and utilized by phytoplankton.
Second, less application, uniform application, diligence. The so-called "less applied" means that each application of tens of organic fertilizers to 100 kg per acre. The so-called "equipment" means that the water and the entire pool of manure are spilled evenly so that the color of the fishpond is yellow-brown or oil-green. The surface of the fish is oil-free and the transparency is maintained at 20 cm to 30 cm. The so-called "diligence", that is, with the feeding of fish, whenever the pond water is reduced in fertility, transparency greater than 30 cm, immediately re-fertilize.
Third, sunny morning fertilization is good. Pay attention to listening to the weather forecast and do not apply fertilizer on cloudy or rainy days.
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