Why can mycorrhiza raise carp?
The squid is also called the white cricket. It is a large freshwater fish with aquatic plankton as its main food. Carp is characterized by fast growth, low disease, and no special manual feeding. Its economic value is relatively high, and it is valued by the freshwater aquaculture industry. It is one of the important species in mixed fish ponds. Carp inhabits the middle and upper layers of water. In the natural rivers and lakes, the largest individual can reach more than 20 kilograms. In the pond, the largest individual is 10-15 kilograms. Therefore, although there are no herrings and grass carp in meat, it is still the main fish in the pond culture, especially in the suburbs, and the output is the highest.
(1) Choose suitable fish ponds: The area of ​​fish ponds should be 3500--4000 square meters, with water depth of 2m or more, no water leakage, adequate water sources, and easy injection and drainage. For an output of 500kg/667 square meters or more, 0.5kw of oxygen-increasing equipment should be provided for every 667 square meters of pond.
(2) Cultivating palatable baits: Carps are mainly phytoplankton (including bacteria that adhere to algae). In the fry stage (about 15 mm in length) zooplankton are fed, and artificially fed soybean milk is also eaten. Carp is a typical fish that ingests algae. Its main components are diatoms, dinoflagellates, golden algae, and yellow algae. Rotifers and small crustaceans and protozoa are also found in the intestine. Larger branches and copepods are rarely eaten. Therefore, it is important to regularly apply the golden treasure strain to the pond to ensure an adequate supply of algae.
(3) Strengthen water quality management: Although squids rarely get sick, they should still keep the water clean and plump. In addition to regularly replenishing new water to remove part of the old water, it is also necessary to regularly apply the golden treasure compound fertilizer, and the transparency of the water quality can be maintained at about 30cm to 40cm. In the middle and late September, the number of water additions is gradually reduced, and chemical fertilizers are chased at the same time. Once every 7-10 days, urea 1.5-2.5kg per 667m2 fish ponds can be applied. Phosphate fertilizer 2.5--5kg. .
(4) Prevention and treatment of fish diseases: 20 g/m3 of lime slurry shall be splashed once at the end of July and at the end of August, and 0.5g/m3 of crystal trichlorfon and 0.2g shall be used in mid-August and mid-September. / Cubic ferrous sulfate Quanchiposa. Between mid-August and mid-September, furazolidone was used to feed two courses of treatment. The food table should also be regularly cleaned or disinfected with bleach.Isolation Shoe Cover,Disposable Shoe Covers,Blue Shoe Covers Disposable,Medical Isolation Shoe Cover
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