The role of fertilization in fish ponds is mainly to breed natural bait such as plankton, epiphytic algae and benthic animals, and provide abundant food resources for farmed fish such as alfalfa and alfalfa. Spring fish pond fertilization should pay attention to the following matters:
Organic fertilizers must be fully fermented. Spring fish ponds have low water temperatures and rich oxygen in water. Reasonable application of organic fertilizers is not only low cost, but also achieves good breeding results. The application of organic manure such as large manure and livestock manure in fish ponds must be fully fermented. Fertilizers that have been fermented and fermented and fully decomposed by organic matter can be reduced into oxygen consumption in water and absorbed and utilized by phytoplankton. It also kills pathogens in organic fertilizers.
Less application, uniform application, and diligent application of so-called less application, that is, tens of kilograms to 100 kilograms of organic fertilizer per acre; the so-called uniform application, that is, water and manure are evenly spilled throughout the pond, so that the fish pond is yellowish brown or oily. Green, no oil film on the water surface, the transparency is kept at 20 cm ~ 30 cm; the so-called diligence, that is, with the feeding of fish, whenever the water content of the pond drops, the transparency is more than 30 cm, then fertilize immediately.
According to the fish system, it is determined that the amount of fertilization is not the fish pond of the main carp and carp. Because of feeding the feed, the amount of fertilizer applied in spring should be reduced accordingly, so that the transparency is kept at 30 cm to 40 cm. As the temperature rises, the pond water will increase. getting bigger. Intensively raising high-yield squid and grass carp fish ponds, even if some carp and carp are mixed, it is not suitable for fertilization in spring.
Fertilizing time is good for sunny mornings. Pay attention to listening to (see) the weather forecast, not fertilizing on cloudy or rainy days. Phytoplankton grows through photosynthesis and fertilizes in the morning for 2 to 3 days in fine weather. It can promote the proliferation of microorganisms as quickly and best as possible, minimize the pollution of organic fertilizers and ensure the virtuous circulation of fish ponds. .
Regular water changes and fresh water quality If the accumulation of organic matter and various types of biological wastes in fish ponds, the oxygen content in the water, and the poor composition of plankton, will affect the growth of farmed fish. Therefore, it is necessary to exchange new water regularly to prevent the fish pond from being over-fertilized, and always keep the water quality “fat, live, tender and coolâ€.
Organic fertilizers must be fully fermented. Spring fish ponds have low water temperatures and rich oxygen in water. Reasonable application of organic fertilizers is not only low cost, but also achieves good breeding results. The application of organic manure such as large manure and livestock manure in fish ponds must be fully fermented. Fertilizers that have been fermented and fermented and fully decomposed by organic matter can be reduced into oxygen consumption in water and absorbed and utilized by phytoplankton. It also kills pathogens in organic fertilizers.
Less application, uniform application, and diligent application of so-called less application, that is, tens of kilograms to 100 kilograms of organic fertilizer per acre; the so-called uniform application, that is, water and manure are evenly spilled throughout the pond, so that the fish pond is yellowish brown or oily. Green, no oil film on the water surface, the transparency is kept at 20 cm ~ 30 cm; the so-called diligence, that is, with the feeding of fish, whenever the water content of the pond drops, the transparency is more than 30 cm, then fertilize immediately.
According to the fish system, it is determined that the amount of fertilization is not the fish pond of the main carp and carp. Because of feeding the feed, the amount of fertilizer applied in spring should be reduced accordingly, so that the transparency is kept at 30 cm to 40 cm. As the temperature rises, the pond water will increase. getting bigger. Intensively raising high-yield squid and grass carp fish ponds, even if some carp and carp are mixed, it is not suitable for fertilization in spring.
Fertilizing time is good for sunny mornings. Pay attention to listening to (see) the weather forecast, not fertilizing on cloudy or rainy days. Phytoplankton grows through photosynthesis and fertilizes in the morning for 2 to 3 days in fine weather. It can promote the proliferation of microorganisms as quickly and best as possible, minimize the pollution of organic fertilizers and ensure the virtuous circulation of fish ponds. .
Regular water changes and fresh water quality If the accumulation of organic matter and various types of biological wastes in fish ponds, the oxygen content in the water, and the poor composition of plankton, will affect the growth of farmed fish. Therefore, it is necessary to exchange new water regularly to prevent the fish pond from being over-fertilized, and always keep the water quality “fat, live, tender and coolâ€.
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