Control methods of fish bean beetle
① Copper Sulfate: before fish stocking, soak each cubic body of water with 8 grams of copper sulfate for 15 minutes for 30 minutes. ② copper-iron mixture: copper sulfate and ferrous sulfate (5:2) were used to hang bags every half a month during the onset season. ③ sprinkles the mixture of copper sulfate and ferrous sulfate (5:2) in the whole pool, 0.7g per cubic meter of water. ④ water depth of 1 meter per mu, sprinkle with avermectin 15 to 20 grams of the whole pool. ⑤ soaked the diseased fish in 2% salt water or 0.05% formalin for more than 15 minutes. During the onset season of ⑥, azadirachta azedarach leaves were soaked in 15kg per 500m3 of water, changed every 7-10 days, 3-4 times.
- Prev
On the feeding of hermit crabs
Hermit crabs, mainly found on the coastal edges of the Yellow Sea and the southern sea, generally live in rock crevices on sandy beaches and seaside. Hermit crabs take spiral shells as parasites, usually crawl with negative shells, and will immediately shrink their bodies into the shell when they are frightened. With the gradual growth of crabs, hermit crabs will look for new shells to change shells. Dozens of known species of hermit crabs are known, and the more common species along the coast of China are square wrist hermit crab and chlamys farreri. The square wrist hermit crab is slightly larger than the chlamys farreri, and the maximum diameter of the hermit snail can reach 1.
- Next
Prevention and treatment of "autumn plague" in fish
In autumn, fish are prone to acute diseases with high mortality, such as impotence, small claw, Gill rot, water mildew and so on, commonly known as "autumn plague". Seven key points should be taken to prevent and control the outbreak of "autumn plague" in fish. 1. Improve the ecological environment. Pay attention to ecological control, properly feed full-price concentrate, tender grass, etc., as far as possible to meet the nutritional needs of fish growth, in order to improve their immune ability. 2. Actively add new water. The addition of new water can bring in oxygen and a variety of nutrients, and can also dilute the organic matter and
Related
- On the eggshell is a badge full of pride. British Poultry Egg Market and Consumer observation
- British study: 72% of Britons are willing to buy native eggs raised by insects
- Guidelines for friendly egg production revised the increase of space in chicken sheds can not be forced to change feathers and lay eggs.
- Risk of delay in customs clearance Australia suspends lobster exports to China
- Pig semen-the Vector of virus Transmission (4)
- Pig semen-the Vector of virus Transmission (3)
- Five common causes of difficult control of classical swine fever in clinic and their countermeasures
- Foot-and-mouth disease is the most effective way to prevent it!
- PED is the number one killer of piglets and has to be guarded against in autumn and winter.
- What is "yellow fat pig"? Have you ever heard the pig collector talk about "yellow fat pig"?