Astragalus seed selection and stocking

First, transport

The species should be purchased as close as possible to the wild maggots captured in cages. The quail species should be loaded with barrels, rakes, baskets, etc. The baskets should be covered with a layer of non-toxic plastic film on the bottom, then a small amount of wet mud should be placed, and 3-4 pieces must be thrown before transport. The eggs of the shell are mixed with the mud and a small amount of fresh water grass and a few mud cakes are placed. When the air temperature is high or the journey time is longer than 1 hour, add appropriate amount of penicillin or ginger soup in the transport water to prevent the fish body from twining and fever.

Second, choose

When there are a large number of stocks, it is not possible to select one by one. This will not only delay the time but also cause discomfort and injury to the carcass. The following methods can be used for selection:

1. When you look at the water method for large quantities, you should pay attention to observing the turbidity of the water that holds the container. If the container is clear water, it means that the batch of seedlings has a long holding time, and the physical quality is poor. It is not appropriate to purchase; Water turbidity shows that the batch of seedlings has a short holding time and the physique is relatively strong. You can purchase seedlings.

2, salt leaching method with 3% -5% of the salt water to choose, 4-5 minutes within the body of the species will be severe jump injury, poor health of the species will occur coma, weakness and body deformation, will This quail species is treated as a commercial fish and stocked in a normal species of salt water.

3. If the size of the vortex method is smaller, such as when the stocking size is smaller or the stocking time is small, the quail species can be put into a plastic basin, half-basin water is added, and the spiral is drawn by hand in a certain direction to form a vortex, and the physical quality is poor. The fleas are generally in the middle of a vortex. The fleas with good physiology have strong anti-water ability. On the edge of the pot, the pods in the middle are removed and the fleas on the rim are stocked.

4, deep water pressure method in the bucket put half a barrel quail species, the water is full and cover the cover, 5-10 minutes later, open the lid, observe the larvae activities in the barrel, floating in the water surface, head Those who stick out of the water for the sake of poor resistance to hypoxia, weak constitutions, and injuries, should be excluded, and those who have a strong bottom body should be kept stocking.

Third, the temperature adjustment

The method is to slowly add the culture water to the pail through the container, after about 20 minutes, the pupae gradually adapt to the temperature of the puddle.

Fourth, disinfection

After the temperature difference is adjusted, the species must be strictly disinfected before entering the pool. You can soak the seeds for 10-20 minutes by removing the net (10% povidone iodine 20-30ppm) or 2%-3% saline, and remove the injured. And sick salmon. Then swap in clean water and eliminate the poor energy.

V. Stocking

1, the stocking time is generally in late April or late June, the specific time to avoid the peak of egg breeding, choose sunny and sunny day and evening, the water temperature is best around 25 °C.

2, when stocking specifications to be consistent, size, size, graded stocking, so as not to mutual residual food, usually 10-25g / tail for a specification section, 25-50g / tail for another specification section.

3. After the sterilized maggots are removed and rinsed in clean water, lightly enter the pool. The sterilized water contains fallen bacteria and parasites, which cannot be poured into the pond.

4. Within 15 days after stocking, it is a peak period for the morbidity and mortality of plants that are not adapted to the environment. We must constantly check and do a good job of disinfecting. After the success of domestication, we should put in a loach that accounts for about 3% to 5% of the weight.

Greenhouse Dutch Buckets

Greenhouse Dutch Buckets,Dutch Bucket,Tomato Dutch Bucket,Plastic Dutch Bucket

JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com