How to conduct aquaculture in autumn

First, fertilize and promote strong. In autumn, the individual growth supply of aquaculture objects is relatively slow, mainly satisfying the body's energy storage, and timely feeding of concentrate feed can meet the needs of the cultured objects, which can not only increase the output, but also effectively improve the specifications of the aquatic products and the breeding efficiency. Such as river crabs, it is necessary to increase the proportion of animal feed to increase its ointment yellow, fish, shrimp should increase the delivery of fine material, fertility and promote strong, reduce the fall mortality of some species such as green shrimp.

Second, control the water quality. The temperature difference between morning and evening after the fall will be relatively large, it will easily lead to lack of oxygen floating head, pan pool will occur. Therefore, the transparency of autumn water quality control in the 30 to 35 cm, pH value of 8 to 8.5, breeding density is too large, the color of the pond is not ideal for the day to do a good job of oxygen, strengthen the evening tour pond.

Third, science and disease prevention. Autumn is the second highest period of aquaculture disease, mainly ectoparasite and bacterial diseases. It is advisable to use 1-2 times insecticides and one bactericidal drug for common use, and to prevent disease in fish by combining internal medicines that are resistant to diseases and improving immunity, such as immune polysaccharides and allicin. Shrimp and crab ponds should reasonably control the density and distribution of aquatic weeds. They should be fished out as soon as they can, and they can be fished out as soon as possible. They can reduce the diseases and oxygen consumption caused by water rot. Fourth, stepping up the pond. After September, it is necessary to step up the inspection of the ponds to remove the remaining foods in time, and pay attention to the anti-escape facilities, the anti-escape facilities at the entrances and exits, and whether there are loopholes in the escapeable breeding species such as river crabs and soft-shelled turtles. In the evening, the escape prevention and anti-theft inspections shall be strengthened.

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