The use of shrimp pond polyculture sea cucumber is a major measure for the comprehensive development and utilization of shrimp ponds. The economic benefits of mixed shrimp farming are high. Generally, 5,000 ginseng seedlings of 1.5 cm or more per 667 square meters (1 mu) are stored. After two years of careful management, the general rate of catching can reach over 20%. The output of 667 square meters can reach 120-150 kilograms, and the output value of only 667 square meters of sea cucumber can reach 8,000 yuan. To do a good job of polyculture of shrimp and shrimp should pay attention to the following six technical work: 1. The well-selected polyculture shrimp pond should be selected with a hard bottom sediment, and no fresh water inflow, and the seawater salinity should be maintained at more than 26‰ per year. 2. Qingchi disinfection and stocking before the seedlings shrimp ponds should be dredged and disinfested. Disinfection can use bleach or quicklime, bleach concentration of 50X10 (negative power 6), quicklime dosage of 667 square meters 100 kg. 3. There are two points in the function of attaching the attachment base to the attachment base: one is that a large number of benthic diatoms (the main source of sea cucumbers) can be attached; the second is the habitat of the sea cucumber, which can ensure its safety in summer and winter. At present, there are stones, hollow brick porcelain pipes, and tiles that are used as the attachment bases. The amount to be placed depends on the number of seedlings to be placed. Usually 667 square meters is not less than 5 to 10 cubic meters. 4. Applying base fertilizer 10 days before fertilization, cultivate benthic algae and phytoplankton, apply 20 to 40 kg (dry weight) of chicken manure per 667 square meters, and apply inorganic fertilizer every 667 square meters in spring. 2 kg, to create a good food intake and habitat for sea cucumbers. 5. Seed stocking time Sea cucumber seedlings are generally planted in spring and autumn. Spring is in mid-March to late April and autumn is around October. 6. Daily management 1 shrimp pool water level should be maintained more than 1.5 meters a year, high temperature and winter water level should be raised to 2 meters. Change the water once every 10 days during the cultivation period, changing the water volume to about 30%. 2 The salinity of the pool should be kept above 26°C. After entering the rainy season, especially during heavy rain, fresh water on the ground must be excluded. 3 After the winter water surface is frozen, the snow and debris on the ice should be promptly removed to maintain a certain degree of transparency of the pool water. At the same time, a few ice eyes should be played on the ice to increase the dissolved oxygen in the pool water.
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