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Hamamatsu Chemical Fertilizer Aquaculture Technology
Fertilizer fish farming is not the direct consumption of chemical fertilizers by fish, but the increase of nutrient elements in water after the application of chemical fertilizers in water areas, which promotes the proliferation of aquatic organisms such as phytoplankton and zooplankton. After the fish eats these aquatic organisms, the yield increases substantially. (I) Adaptation scope This technology is not only suitable for large- and medium-sized water bodies such as beaches and lakes with an area of ​​tens of thousands of mu. It is also more suitable for promotion of small water surfaces such as ponds and fish ponds below 1 hectare. (2) The climate conditions for fertilizing chemical fertilizers are generally from May to October. The sunshine is sufficient. The water temperature is put on a sunny day above 20°C. The daily schedule is from 9:00 am to 2:00 pm. It is inappropriate to use chemical fertilizers for cloudy, rainy, and low temperatures. . (3) The types and proportions of chemical fertilizers to be administered are mainly nitrogen and phosphate fertilizers, and no potassium fertilizer is needed. Nitrogen fertilizers are mainly ammonium bicarbonate followed by urea and ammonium chloride; phosphate fertilizers are mainly superphosphate; nitrogen-phosphorus compound fertilizers can also be applied. The ratio of nitrogen and phosphorus fertilizers is 1:1. Each input amount per acre should be controlled below 10 kilograms; the total amount of inoculated fertilizer depends on the number of fish stocks in stock. (d) The species of fish to be used for fry feeding is mainly whitebait, which accounts for more than 90% of the total number of fish, other fish such as pupa, pupa, pupa, etc. account for less than 10%; fry is generally suitable for weighing about 150g in tail weight, depending on the number of fry. The design output is high and low. (five) cast fertilizer method to choose to open sunny, water depth of 0.5 to 4 meters of fertilizer planting area, we must adhere to the water evenly spilled, opposed to dry spreading and the entire bag delivery. It is also necessary to flexibly grasp and do a good job of beach swing adjustment according to different conditions such as water conditions, fish conditions, and weather changes. (6) Analysis of Benefits Beach-floating chemical fertilizer has a small amount of inputs, many outputs, high efficiency, and easy operation. As long as the technology is properly mastered, generally about 2 kilograms of chemical fertilizer can increase production of 1 kilogram of fish, and the cost of chemical fertilizer per kilogram of fish is about 1 yuan.