The role of fish pond fertilization is mainly to breed natural bait such as plankton, epiphytic algae and benthic animals. After fertilization in fish ponds, microbial growth and organic debris increase greatly, providing abundant food resources for farmed fish such as alfalfa and alfalfa; some rotten organic fertilizers can also be directly fed by fish such as alfalfa and alfalfa. Spring fish pond fertilization should pay attention to the following matters:

1. Organic fertilizer must be fully fermented. The spring fish pond has a low water temperature and relatively rich oxygen content in the water. Reasonable application of organic fertilizer is not only low in cost, but also can achieve a good breeding effect. The fish ponds are applied with organic fertilizers such as large manure and livestock manure, which must be fully fermented beforehand. The organic fertilizer is fermented and decomposed, and the organic matter is decomposed. After being applied to the fish pond, the oxygen consumption in the water can be reduced, and it can be absorbed and utilized by the phytoplankton relatively quickly.

2, the principle of fertilization, less application of uniform application. The so-called "less application", that is, tens to 100 kilograms of organic fertilizer per acre. The so-called "even application", that is, water and manure are evenly sprinkled throughout the pond, so that the fish pond water color is yellowish brown or oil green, the water surface is oil-free, and the transparency is kept at 20 cm to 30 cm. The so-called "diligence", that is, with the feeding of fish, whenever the water content of the pond is reduced and the transparency is greater than 30 cm, fertilization is immediately applied.

3, fertilization time, sunny morning is good. Pay attention to listening to (see) the weather forecast, not fertilizing on cloudy or rainy days. The phytoplankton grows through photosynthesis and fertilizes in the morning for 2 days to 3 days in fine weather. It can promote the proliferation of microorganisms as quickly as possible, minimize the pollution of organic fertilizers and ensure the virtuous circulation of fish ponds. .

4. Determine the amount of fertilization due to fish production. It is not the main fish pond, the fish pond. Because of feeding, 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 fatness of the fish pond water will become larger and larger. Intensively raising high-yield squid, intensively raising high-yield grass carp, although mixed with some carp and carp, it is not suitable for fertilization in spring.

5. Change the water regularly to keep the water fresh. If the metabolic wastes of organic matter and various types of organisms in fish ponds accumulate too much, the oxygen content in the water will decrease, and the composition of plankton will be poor, which 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 cool”. (Wei County Agriculture and Animal Husbandry Bureau)

This article URL: What fertilizer to use for fish farming spring fish pond fertilization considerations

Wheat Seeder

Wheat Seeder,Wheat Seeder For Crops,Multifunctional Wheat Planter,Agricultural Large Wheat Seeder

Taizhou Yingtian Agricultural Machinery Manufacturing Co., Ltd. , https://www.sakuradaagc.com