Breeding method and pond for improving commercial specification and yield of procambarus clarkii in pond
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A technology for procrastinatus clarkii and commercial specifications is applied in the field of aquaculture for improving the commercial specifications and output of protocrayon cruzi in ponds, and achieves the effects of increasing feeding area, increasing water temperature, and increasing coverage area.
Active Publication Date: 2016-10-12
FISHERIES RES INST ANHUI ACAD OF AGRI SCI
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Problems solved by technology
[0003] The invention aims to solve the defects of the traditional method of mainly raising Procambarus clarkii in ponds, and provides a method for improving the quality of Procambarus clarkii products in ponds.
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Embodiment 1
[0101] 1. Pond conditions
[0102] The pond is transformed from a lake beach, with an area of 32 mu and an aspect ratio of 2:1. A ring ditch was excavated for the pond. The upper bottom of the ring ditch is 8 meters wide, the lower bottom is 3-4 meters wide, and the slope ratio is 1:2.5-3. The depth is 0.8 meters, the height of the ridge is 0.8 meters, and the width of the ridge is 3 meters. The ring ditch accounts for 23% of the total water surface.
[0103] 2. Clearing ponds and fertilizing
[0104]On November 20, 2014, the pond water was completely drained, frozen and dried for 20 days, and 200 kg of fully fermented organic manure was applied per mu, and the fertilizer was bought into the soil 10-15cm by a rotary tiller. On the second day after fertilization, inject 10-15cm of water, sprinkle 20 kg of bleaching powder per mu, remove snakehead, eel, loach, wild fish, etc., and kill pathogenic microorganisms.
[0105] 3. Aquatic planting
[0106] Elodea transplantation. ...
Embodiment 2
[0124] 1. Pond conditions
[0125] The pond is transformed from a paddy field, with an area of 40 mu and an aspect ratio of 1.6:1. A ring ditch was excavated for the pond. The upper bottom of the ring ditch is 10 meters wide, the lower bottom is 4-5 meters wide, the slope ratio is 1:3, and the ditch is 1 meter deep. , The ridge is 1 meter high, 3 meters wide, and the ring ditch accounts for 25% of the total water surface. The pond is adjacent to Shengjin Lake and has abundant water.
[0126] 2. Clearing ponds and fertilizing
[0127] On November 5, 2014, the pool water was completely drained, and it was frozen and dried for 20 days. Using fully decomposed chicken manure as a base fertilizer, the chicken manure was evenly sprinkled on the central beach, and the chicken manure was rotated into the soil by 10-15cm with a rotary tiller. , Use 300 kg of chicken manure per mu. On the second day after fertilization, flood the central bank with water to 10cm, remove the rice stub...
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Abstract
The invention provides a breeding method and a pond for improving the commercial specification and the yield of procambarus clarkii in the pond. The breeding method comprises the following steps: drying the pond under the sun; putting young procambarus clarkii into the pond for the first time; performing catch rotation on commercial procambarus clarkii for the first time; putting young procambarus clarkii into the pond for the second time; performing catch rotation on commercial procambarus clarkii for the second time; and thoroughly draining water of the pond, and catching all commercial procambarus clarkii. The pond comprises a circular groove which is digged along the periphery of the pond, wherein the circular groove has an upper bottom width of 6 to 10 meters, a lower bottom width of 1 to 5 meters, a depth of 0.8 to 1 meter, a ridge height of 0.8 to 1 meter and a slope ratio of 1: 3; the area of the circular groove accounts for 20 to 30% of the total area of the pond; the a region, located at the inner side of the circular groove, of the pond is piled with a central enclosed beach; and the distance between the water level of the pond and the central enclosed beach is in a range of 10 to 70 cm. The invention has the following beneficial technical effects: by adopting the method provided by the invention, 200 to 250 kg of commercial procambarus clarkii can be harvested in two seasons, wherein the proportion of the commercial procambarus clarkii with a specification of 40 g or more reaches 60 to 70%.
Description
technical field [0001] The invention relates to a method for cultivating freshwater shrimps, in particular to a method for raising the commercial specification and output of Procambarus clarkii in ponds. Background technique [0002] Procambarus clarkii (Procambarus clarkii), commonly known as freshwater crayfish, belongs to Crustacea, Decapoda, Crawfishidae, and Procambarus genus. It is native to northern Mexico and southern United States. It was introduced into Nanjing, Jiangsu, and Chuzhou, Anhui through Japan in 1929. Now it is mainly distributed in Jiangsu, Hubei, Anhui, Jiangxi, Shanghai and other areas in the middle and lower reaches of the Yangtze River. The shrimp is rich in nutrition and delicate in meat quality, and is favored by consumers at home and abroad. European and American countries have been consuming freshwater crayfish since the 1880s. Since the beginning of this century, with the help of brands and festivals such as "Xuyi Lobster" and "Chinese Lobster...
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