Pond Requirements: The fish ponds should have an area of ​​3 mu to 10 mu and a water depth of 2 to 2.5 meters. The bottom of the pool is flat and the mud is about 10 cm to 15 cm, making it easy to enter and drain water. 10 days before stocking, clear ponds should be used, and decomposed manure should be applied one week before stocking.
Summer flowering: Choose summer flowers that have been subjected to nets to be drawn, and transport containers such as buckets, oxygen bags, etc. into the pool for 15 minutes until the pond reaches the pond. The stocking density is controlled at about 100 million tails/mu, preferably no more than 150 million tails/mu. The main fish is put first, and the fish is lagging for 10 days to 20 days after stocking. It is better not to cultivate the same fish in the same size.
Feeding: The ponds of the main carp and carp species are dominated by fertilizer and water, supplemented by feeding. In addition to the application of base fertilizer, the monthly application of decomposed livestock and poultry manure 2 times to 3 times, the daily need to feed the right amount of wheat flour, rice bran and so on. The main ponds for raising grasses and squid species are fed mainly with green puddings such as yamping and duckweed from July to early September, supplemented with appropriate amount of concentrate, and sufficient quantities of refined products are also guaranteed from mid-September to early November. The feed is fed to enhance the body composition of grass and squid and increase the survival rate of overwintering; the feed should be fed with compound feed, and the particle size should be suitable.
Water quality regulation: From June to September, change the new water once a week to two times, each changing the water about 5 cm to 10 cm. Sprinkle lime every month 1 or 2 times, each time using 20 kg/mu. The pond is equipped with aerators that can be turned on for oxygen in the morning and at noon on sunny days.
Disease prevention and treatment: The prevention and control of disease in the breeding stage of fingerlings should be based on prevention and prevention and control. Regular liquids can be spilled around the food court, or you can use drug bags. Pay attention to the monitoring of diseases such as erythroderma, rotten gills, enteritis, bacterial septicemia, and anchor head lice, and take timely treatment measures. Do not overdosing drugs and not abuse drugs.
Tongtang wintering: When the water temperature is between 5°C and 10°C, it can be used to pull nets and ponds. According to the species and specifications, the fish species can be sorted and stocked and stocked into dedicated fish ponds. Large-sized fish species can also be stocked directly into adult fish ponds. Pulling nets, selecting fish, transporting and other operations should be quick and gentle to prevent fish injuries.
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What problems should we pay attention to when using solar energy for power supply?
1. The whole day sunshine time of monitoring points along the expressway shall be considered first. As the main energy of the power supply system comes from sunlight, the sunshine exposure time must be considered, which is particularly prominent in mountainous areas where there is little sunshine, but not in plain areas.
2. Working power, working voltage and current of monitoring facilities along the expressway. After considering the power of the whole load, we can choose the solar panel that is more suitable for the long-term operation of the equipment.
3. If the battery discharge cannot make the monitoring equipment work for a long time, the monitoring system will be paralyzed in the rainy season, but the expressway is prone to accidents in the rainy season.
4. The conversion rate of solar cells is low. At present, the conversion rate of solar cell power supply is only about 20%, that is to say, if the silicon solar cell is spread over a square meter, 100~200W of power can be obtained, which is obviously not enough to meet the long-term operation of the monitoring equipment. Of course, with the development of technology and the improvement of the quality of crystalline silicon cells, we can obtain more power resources in a smaller area in the near future.
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