First, adapt to changes in the market "Fish is well-kept, it's better to sell well." In most areas in the north, spring bloom and autumn harvest are followed, and then the fall is listed on the market. Of course, the phenomenon of selling fish is difficult and the price is low, which affects economic efficiency. The adoption of multi-stage wheel-retaining catch can always maintain sufficient amount of fish in the pond, so that the potential of the pond water body can be fully utilized and the products can achieve a balanced market, so as to achieve high yield and high efficiency. Second, change shallow pond to deep pond The ponds are low and low in water, which is a problem that many small-scale farmers do not pay attention to. The ponds are shallow, the temperature difference between day and night is large, the yield of food organisms is low, and the fish movement space is small, which is not conducive to fish growth and polyculture, but also limited The pond exerts the greatest fish productivity, which seriously affects economic efficiency. And no water leakage will undoubtedly increase the cost of continuous replenishment and increase the cost of farming. The depth of general fish ponds should be 1.2~2 meters, and the depth of adult fish ponds should be 2~3 meters. Third, the provision of bait resources, reduce production costs The cost of bait accounts for about 70% of the cost of the entire aquaculture. It is an effective way to increase the economic efficiency of aquaculture by opening up food resources and reducing production costs. 1. Grass cultivation fish: make full use of the pool pond slope, shrubs, and local conditions to plant high yield and quality of fish with green feed, to meet the feeding needs of herbivorous fish in different seasons, to achieve cost-effectiveness. 2. Combination of fishery and animal husbandry: According to the needs of fishery and fertilizer, maintain a moderate scale of pig raising and poultry breeding, implement integrated management of fish and livestock, and combination of fish and poultry, solve fish farming and fertilizer, and gradually establish feed feeding and livestock and poultry. The virtuous circle greatly improves the comprehensive benefits of farming. 3. Try not to feed the feed and promote the full-price compound feed for fish farming: The loss of feed in the bulk feed ponds is large, the feed coefficient is high, and the cost is not low. The compound feed has comprehensive nutrition, high feed conversion rate, and short breeding cycle, which can achieve the goal of scientific feeding high yield and high efficiency. Fourth, pay attention to fish disease prevention The fish gills said that "fish farming is not awkward and it is too rich to be faint", which shows the importance of preventing and treating fish diseases. Fish live in water and it is difficult to treat fish diseases. Therefore, the prevention of fish diseases is the most important. In particular, some small and medium-sized farmers often do not attach importance to the prevention of fish diseases. When fish are symptomatic and want to use drugs, they often use a large amount of drugs. However, the large number of medications used to treat fish diseases itself is to increase costs, and it also corrupts water quality and affects fish. Normal feeding, delaying growth, causing multiple losses, so we must pay attention to fish disease prevention. Fifth, strengthen daily management As the saying goes, "Increase production by thousands of lines, by managing a needle." Poor management will also increase the cost of farming and affect economic efficiency. The principle of “three observations and four determinations†for feeding, strengthening the control of water quality, preventing fish diseases, and creating a water environment suitable for the survival and growth of fish are what we must do rigorously. Hair Removal Machine,Hair Removal Device,Best Hair Removal Device,Laser Hair Removal Device Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.meizons.com