Some practices of using shallow ponds for aquaculture
With the rapid development of aquaculture, the utilization rate of ponds is getting higher and higher, and the sedimentation phenomenon at the bottom of the pool is becoming more and more serious. Especially in the village ponds, many water bodies have shallow water levels and the farming space is narrow. If these ponds are not renovated and renovated, the aquaculture environment will be deteriorated and the aquaculture efficiency will be reduced. However, in the production process, due to the constraints of funds, time, manpower and other objective conditions, these shallow water ponds will be renovated in time to make them ideal. Water depth is more difficult. How to make these shallow ponds play a role in order to achieve better production efficiency, I believe that in the actual production should pay attention to the following points Our Honey include polyflora honey, Acacia Honey, sunflower honey, buckwheat honey, linden honey, Vitex Honey etc. Our Honey 100% Pure Honey,Mixed-Flowers Honey,Polyfloral Honey,Acacia Honey,Multi-flower Honey,Chaste Honey Easy Food (Jiaxing) Co., Ltd. , http://www.jxeasyfood.com
First, determine the appropriate breeding type
What kind of species should be cultivated in ponds should be determined according to the specific conditions of the water body, among which water depth is one of the important reasons. If the water level of the culture pond is too shallow, large-sized fish species cannot be fished. Under normal circumstances, the water depth of the pond is less than 1.2m. It is better not to cultivate the grass carp commercial fish, nor can it be used as a broodstock cultivation pond. Consider fish cultivation. Breeding and breeding of special aquatic products. Ponds with a water depth of less than 1.0m can be reared with a little modification to breed astragalus and loach. If there is too much sludge in the bottom of the pool, economic crops such as lotus root can be grown to absorb the fertilizer, and a small amount of fish can be cultured in the pool. In addition, according to the habits of farmed fish, try to choose fast-growing, short growth period, low requirements for pond conditions, and can adapt to the survival of fish in shallow water for breeding, such as tilapia, mackerel, eel, freshwater White pheasants, etc. are optional breeding objects.
2. Efforts to expand the size of the water space in aquaculture water space directly affect the growth and survival of cultured species. The shallow water level in the water will inevitably cause a relatively small space in the aquaculture water body. When stocking fish, it is necessary to master certain stocking densities and, in principle, rely mainly on thinning to increase the space for aquaculture water. In the use of aquaculture water, it is necessary to keep the water level stable for a long period of time according to the needs of the cultured species. Pay attention to filling the pool water to maintain the highest water level, and add new water in time when the water level is lowered. The low-lying area on the pool can be filled with hard soil in an effort to increase the surface area, expand the aquaculture water space, and maximize the use of aquaculture water bodies.
Third, to improve the aquaculture environment Shallow water ponds, due to the shallow water level, aquaculture water affected by the environment, especially the water temperature changes are more obvious. In order to change this situation, farmers should adopt appropriate technical measures according to the different seasons of the year. For example, in spring and autumn, appropriate shallow water in the pond is conducive to an increase in water temperature, which facilitates the photosynthesis of aquatic plants in the water body. Increase the natural basic food organisms of the cultured species, and it is also conducive to early eating and late feeding, which can promote the rapid growth of cultured species. In summer, the water temperature is high, the water level should be deepened as much as possible, and the aquaculture water body should also be replaced frequently to regulate the water quality. Water temperature; when summer heat comes, we must take summery measures. Places where conditions permit can be shaded by the pool. The simple method is to cover the grass with water, or plant aquatic plants in the pool and around the pool to purify the water. Water temperature; winter water temperature is reduced, when the species to be farmed reaches the commercial fish size, it should be sold as soon as possible, try not to overwinter. If the pond is cultured with yellow earthworms and loach, the pool water may be drained before the ice-sealing period approaches, so that it can be sneaked into the bottom of mud and then covered with straw, etc. to prevent cold.
Fourth, to strengthen the daily management of shallow ponds for aquaculture, but also should strengthen daily management. In addition to paying attention to the changes in water quality, it is important to observe the ponds more frequently and observe them in a timely manner so that problems can be solved in time. Especially during the rainy season in summer, care should be taken to prevent flooding and flooding of ponds. Due to shallow water, summer should pay more attention to the lack of oxygen in the water in the pool and cause flooding. It is also necessary to prevent theft at night and avoid accidental loss. In feeding, it is necessary to ensure that the cultured species eat well, adhere to the principle of small meals, feed more feeds that are preferred by farmed fish, in order to maintain a reasonable supply of nutrients, and to ensure that the current year's earnings. When fertilization is needed, fertilizer must be applied in a timely manner to ensure the richness of natural basic food organisms in the aquaculture water body. When the species to be farmed reaches the specifications of the commodity, once the price is reasonable, it is necessary to start catching and selling, to make early returns, and to avoid and reduce the risk of breeding.
Fifth, do a good job of disease prevention shallow ponds, water quality is easy to deteriorate, accelerate the breeding and growth of bacteria in the water body, a little carelessness will result in the death of cultured species, so timely prevention of disease should be done. In the early stage of cultivation, the bottom of the pool is thoroughly cleared with lime, because shallow ponds are more silt and the bottoms are more acidic, and the amount can be slightly increased. The whole pool can be sprinkled at a rate of 300g/m2 to regulate the pH of the aquaculture waters. Improve water quality. When the seeds are released, they must be disinfected in vitro. The salt bath can be used to dip medicinal baths. In routine management, regular use of quicklime, bleach, and other drugs disinfect water bodies to purify water. Rats, snakes, and other predator organisms are to be captured by human means. They are not allowed to invade as much as possible. Otherwise, the animals will suffer disability because of the shallow water, and the cultured species cannot escape.
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