Mushroom and South American white prawn polyculture technical points

In order to make full use of limited water resources and take a high-yielding, high-efficiency breeding road, Xiaoshan District began to test mixed turtles and white shrimps in the farms in the Tidal Flat Reclamation Area in 2002. The area has reached 1800 mu (1 mu = 667 square meters, the same below).
1. Clear pond disinfection of winter goods after the capture of soft-shelled turtles, remove silt, per acre with 150 kilograms of lime disinfected, exposure; to mid-April, when the water, and then bleached with bleach 5 kg per acre.
2. Seed stocking
By the end of April, each turtle will have about 800 pieces of turtles weighing 150-200 grams per mu; in mid-May, it will have about 15,000 pieces of white shrimp, 0.8 to 1.2 centimeters in length. The stocked soft-shelled turtle and South American white prawns are required to be uniform in size, robust and lively, with a clean body surface and no body lesions. In order to improve the benefits, 10 mussels, 20 white mules and 5 blackfish can be stocked per acre.
3. The feed was fed to the soft-shelled turtle and the South American white prawn fry. After feeding, the turtle was fed artificial compound feed. The first 10 days after stocking was required to be fed once a day in the morning, and once a day after 10 days, they were fed one at a time in the morning and evening. One month later, they were fed once a day in the morning, in the evening and once in the night. Feeding turtles to eat, eat well, eat, and maintain the cleanliness of the aquatic environment.
4. Water quality regulation Add new water 1 to 2 times a week. During the hot season, the ponds should be stepped up early, middle and evening. New water should be added every day or every other day. Once the water quality is found to change, take necessary measures to prevent it. During the entire culture process, pay attention to maintain the tan or yellow-green water color.
5. Prevention of diseases When turtles are stocked, they can be disinfected with potassium permanganate. In normal times, the culture ponds are disinfected once a month with 50 mg/kg of quicklime, and once a month with high temperature seasons, they are sterilized with 0.2 mg/kg of bromine oxygen hydantoin. Doing prevention is the priority, and prevention is more important than governance.
Author: Xiaoshan Agricultural Technology Promotion Center, Hangzhou, Zhejiang Province

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