Several methods for breeding fry

1. Organic Fertilizer Law Generally, the basic fertilizer is applied 7 days before the fish pond, and 300 kg of livestock manure or human urine is applied per 667m2 to breed natural food organisms for feeding the fish seedlings. After the fish enters the pond, the amount of topdressing is determined according to the water quality, weather, water temperature, and the growth of the fish seedlings. Fertilizer is generally applied once a day and 100 kg of fertilizer per 667m2 is applied. After the hydrating slurry is added, the whole pool is splashed evenly. 4 days after the fish enters the pond, such as early morning fry floating head, after sunrise, return to normal, indicating that the pool water is moderate; if it still floats after 8 o'clock in the sunny day, it indicates that the water quality is too fat, and the amount of fertilizer should be stopped or reduced; if not floating, The light color should increase the amount of fertilizer.
2. Cake-fed feeding method Cakes such as cotton cakes, rapeseed cakes or bean cakes are ground into dry powder for feeding fish. The advantage of this method is that the feed can be processed in a concentrated manner and it is easy to use. At the same time, spread the powder evenly over the water. With the surface tension of water, the dry powder floats in the pool water for a longer time than soybean milk, and the utilization rate is also higher than that of soybean milk. For every 667m2 of water, use 2kg per day and feed 3 times.
3. Fertilizer feeding method 15 days before the fry hatching, basic fertilizer is applied first, and 4 kg of ammonium sulfate and 7 kg of superphosphate per 667 m2 are used. After the fish fry down the pond, the amount of top dressing was determined based on the water quality, the weather, and the growth of the fry. For every 667m2 of water surface, 2 kg of ammonium sulfate and 0.5 kg of superphosphate are topped every 3 days. When topdressing, the fertilizer is added to dissolve the water and the entire pool is sprayed evenly to prevent the fish from mistakenly swallowing the fertilizer particles and causing death.
4. The straw-feeding method processes water hyacinths, water peanuts, duckweed and other aquatic plants into straw-fed raising fry. This method can reduce production costs. Quanchiposa, 2 times a day, every day, 667m2 surface water, 65 kilograms of grass pulp, depending on the specific amount of water. The fry can directly ingest part of the straw pulp particles, and the rest of the straw pulp is decomposed in water to play a role of fertilizer and water.
5. Soymilk feeding method is generally half a day after the fry in the fry, feeding soybean milk, soaking the first water soaked in water, at a water temperature of about 25 °C, soaking for 6 hours, too long or insufficient time will affect the quality of soy milk, generally 1 kg of soybeans can be ground 15 kg Soy milk. The ground soybean milk should be sprinkled on the surface in a timely and uniform manner, once a day on the afternoon and afternoon, and the fish should be fed with 2 kilograms of ground soybean milk every 667m2 of water for 10 days. After 10 days, depending on the color of the water and the growth of the fish, increase the amount of feed as appropriate. Generally raising 10,000 summer fish species requires 8 kilograms of soybeans.

Organic chemical intermediate is an important part of chemical production. It is not only the basic raw material but also the fine chemical raw material. It has a very far-reaching impact on chemical production and development. Organic chemical intermediates play an important role in promoting the development of fine chemical industry, making chemical intermediates to develop in the direction of low price and good quality, thus promoting the variety, quality and technology of chemical intermediates.

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Material Intermediates

Coumarin 460,BIS- 3-Phthalyl Anhydride Ether,4 4 -Oxydianiline 99%,3-Aminophenylacetylene 99%

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