1 Water quality monitoring. Always pay attention to changes in water quality and find problems in a timely manner. Pool water depth is flexible according to different seasons. Generally, the water level is maintained at 60-80 cm before July, and the water level will be deepened after July. The water level will be maintained at about 1.5 meters in the hot season.
2 The number of water changes should be moderate. Too much water change will cause stress reaction to the crab, which is not conducive to growth; too little will cause deterioration of water quality. Generally, the water temperature is changed 1 time in 20 days below 5 days, 20 days or more in 3 days. Keep micro-flowing when the weather is hot, and continue flushing during the hot season. Changing water is usually performed from 9:00 am to 4:00 pm.
3 The bait is fed with early sowing soybeans, corn, wheat, etc. In the medium term, some small fish, fish meal, etc. are added. In September, the temperature is high, and the amount of feeding is reduced. In October, it is a period of rapid growth and the amount of feeding is increased. Feed intake decreased after November. The annual feed volume is generally 30% in the first half of the year and 70% in the second half.
4 often patrol pond, pay attention to disease prevention. Found diseased crabs and dead crabs should take timely measures. To prescribe the right medicine, do not use drugs, otherwise it will aggravate the condition.
2 The number of water changes should be moderate. Too much water change will cause stress reaction to the crab, which is not conducive to growth; too little will cause deterioration of water quality. Generally, the water temperature is changed 1 time in 20 days below 5 days, 20 days or more in 3 days. Keep micro-flowing when the weather is hot, and continue flushing during the hot season. Changing water is usually performed from 9:00 am to 4:00 pm.
3 The bait is fed with early sowing soybeans, corn, wheat, etc. In the medium term, some small fish, fish meal, etc. are added. In September, the temperature is high, and the amount of feeding is reduced. In October, it is a period of rapid growth and the amount of feeding is increased. Feed intake decreased after November. The annual feed volume is generally 30% in the first half of the year and 70% in the second half.
4 often patrol pond, pay attention to disease prevention. Found diseased crabs and dead crabs should take timely measures. To prescribe the right medicine, do not use drugs, otherwise it will aggravate the condition.
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