The loss of high temperature production in summer is serious, how to cultivate sea cucumbers?

The annual period from July to September is the period when the air temperature and the water temperature of the sea cucumber culture pond reach the highest value, and the high temperature in this period is a great danger to the culture of sea cucumber in the pond, so the culture units should pay special attention to it. In order to ensure the normal growth of spines, reduce the loss and achieve the expected production target, the high temperature culture techniques of sea cucumbers in the pond from July to September are as follows:

I. requirements of water quality conditions

The water temperature is 14-20C and the salinity is 2332. According to the experiment of Fisheries Research Institute of Shandong Haodangjia Marine Development Co., Ltd., the lowest salinity of Chitang seawater should not be lower than 20 min, pH 78-8 s, dissolved 4.0mg/L above, ammonia 0.1mg/L below. The water quality of cultured sea cucumbers is the key. We must pay close attention to the water quality and make timely adjustment measures to ensure the safety and growth of sea cucumbers.

Second, intake and drainage

It is necessary to pay close attention to water intake and drainage during the spring tide flood. When entering and draining water, it is necessary to observe whether the outer sea water has pollution such as red tide, and whether the salinity is suitable or not. The time of intake and drainage can be controlled flexibly, if due to weather, wind direction, wind and other reasons, it can be advanced or pushed forward. 3. Apply beneficial biological agents regularly.

1. After changing the water in the spring tide season, Fan will use it immediately. If it is because of the lake, it can be postponed.

2. The normal application amount of 2kgo per 667m2 can be increased appropriately if there are special circumstances.

3. After the microbial river is mixed with water, the wine is sprinkled evenly in the whole pond, the dead corner of the pool can be spilled a little more, and the ratio of water to water can be carried out according to 1Ru 50mm 100.

4. Precautions: microbial preparations should not be mixed with antibiotics and disinfectants. They can only be used 3 days after the administration of antibiotics and disinfectants. The effect of applying microbial preparation and adding oxygenator at the same time will be better.

Third, remove moss, gully grass and other abundant miscellaneous algae

If there is a large number of moss, gully grass and other algae in the ginseng pond, we must seize the time to remove them, otherwise, the algae will age and rot at the bottom of the pond, which will inevitably lead to the production of harmful substances such as hydrogen, ammonia nitrogen, methane and so on. resulting in hypoxia at the bottom of the sea cucumber pond, or the death of algae on the body of sea cucumber caused local hypoxia, resulting in the death of sea cucumber.

IV. Increasing oxygen

Because the weather is relatively hot and the air pressure is relatively low at this time, the natural dissolved oxygen content of sea water is affected, so when the weather is hot, thunderous, and the pressure is low, oxygen-increasing agents should be used to increase oxygen or allow workers to use navigation boards to stir sea water to increase dissolved oxygen. If conditions permit, try to change water to increase dissolved oxygen when the salinity of the outer sea water is above 22.

During the period of high temperature, due to the easy corruption of organic matter such as sea cucumber residual bait and feces at the bottom of the culture pond, as well as the reproduction and decay of moss and other algae in the pond, the harmful substances such as ammonia, chlorine sulfide and other harmful substances at the bottom of the culture pond increased, coupled with sultry weather, low air pressure, frequent drop, more fresh water and other reasons, resulting in the decrease of salinity in the pond, resulting in the continuous decrease of dissolved oxygen in the culture water. Causing disease and death of farmed organisms. The above is what the editor of Tuliu.com brings to you.