Fertilizing and Fertilizing Fish
Fish pond fertilization is the main component of breeding plankton in fish culture, and it is an effective measure to artificially promote the biological reproduction of food. However, fish pond fertilization is much more complicated than direct fertilization of crops. In the practice of fish farming, the author found that the fish ponds were fertilized and fermented with good fertilizer and water effects, and they were easy to make. Now introduce four methods of fermenting and fertilizing fish: The green manure is deposited on the leeward sunny corner of the pool corner, and the livestock manure is pressed on the top, and the manure is pressed on the top for 2 to 3 days, allowing it to ferment and rot and decompose until the stem is reached. After the leaves have rotted, the stumps will be picked up. Manure Fermentation Fermentation Manure must be thoroughly fermented before use, and human fecal urine should be sterilized by adding 1% to 2% lime to kill pathogens and parasites. Decompose manure and urine diluted with 2 times water, and then evenly spilled; animal manure piled in fish pond after rot. The application rate is generally 250-400 kg per mu. Mixed Fermentation Fertilizer Fermentation After decomposing green manure and manure by mixed fermentation, use 250 kg per acre to dilute with water to remove sediment, and then pour the fat into the fish pond. Fertilizer Fermentation will add 100-200 kg of Ca-Mg-P fertilizer plus 200-250 kilograms of vegetable fertilization mud to fully mix evenly. Humidity is hand-kneaded into groups and landing is appropriate. Mix well and piling it into a tower shape. The surface is lapped with the back of a spade or a wooden board. Finally, it is covered with a plastic film or sealed with a thin slurry. After stacking for 20 to 25 days, the stack can be used. Applying 30 kg fermented calcium magnesium phosphate fertilizer every 15 days, 3 to 5 days later, the fish water body is green or brown green, and the transparency should be kept 25 to 30 cm. For urea and ammonium bicarbonate fish, the water should be added to the whole pool. Sprinkling, a dose should not be too much, each time per acre of 2 to 4 kg is appropriate, top dressing should be determined according to the color, etc., every 3 to 7 days topdressing 1 times.