Fish pond top dressing four methods
First, the human and animal manure application method will be added to the amount of human and animal manure diluted with appropriate amount of fresh water, and then slowly poured around the pond water, in order to increase the pond water body fat, cultivate fish food creatures. The number of topdressing varies depending on the type and size of the fish, and it can be easily grasped based on the water quality and temperature. Fertilizer topdressing must undergo fermentation and strict disinfection.
2. Domestic sewage treatment method Domestic sewage is non-toxic waste water used in the processing of agricultural and sideline products or in people's lives. It contains a variety of organic matter. Using domestic sewage as fertilizer can save feed. At the time of application, the domestic sewage is first precipitated to remove the residue and then injected into the pond. The amount of application differs depending on the concentration of the sewage. Since the domestic sewage is more turbid, it is prone to lack of oxygen. Therefore, ponds that require domestic sewage are not easy to get too deep. At the same time, the amount of dissolved oxygen in the pool should also be constantly measured to control the effluent and avoid the death of the fish.
Third, the mixed compost method The compost compost mainly includes grass, lime, and feces. The method is to first put the grass and manure in a certain proportion into the fermentation pit, plus a certain amount of quick lime, a layer of grass, a layer of quick lime, a layer of manure, fill it once, and add water until the fertilizer is completely immersed in water. The above is sealed with mud, so that it can be fermented, ready to use after decomposing, and how much to apply according to the water color and water temperature of the pool water.
IV. Inorganic Fertilizer Sprinkling Method In fishery production, inorganic fertilizers are commonly used in nitrogen, phosphorus, and potassium, and the general investment ratio is 1:1:0.50. At the time of application, the fertilizers were first crushed and mixed with water to dissolve the whole pool. The dosage is generally 4-5 kg ​​of nitrogen fertilizer and phosphate fertilizer and 2.0 to 22.50 kg of potassium fertilizer per acre of water surface.
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