(a) Kill the water fleas. Hydra, also known as the "water clip," often sucks juveniles and sucks their body fluids. Killing method: You can add a little kerosene to kill the water fleas when you pull the net to work fry, or choose sunny, and directly pour the kerosene into the pool (the oil film covers the whole pond as the degree).
(b) Kill water snakes. The water snake feeds on aquatic animals such as fish, shrimp, muddy, and scutellaria, which is a great hazard to fry and fingerlings. Kill method: (1) Realgar egg kills water snake. Each 0.067 hectare (mu) seedling pond is cooked with 7-10 salted eggs in 20 g of realgar, and then shelled and put into the pool. (2) Lure killing method. The straw tied with stones is placed in the middle of the eggshells of fresh poultry and then immersed in the edge of the fishpond. In the evening, the fish is put into the pond. In the morning of the 2nd day, it is taken out of the pond and the straw is opened to kill the water snake. (3) bait hook fishing. With a hook, the frog hooked the frog on the surface of the surface of the water. The hooked frog made a noise on the surface of the water. When the water snake heard it, he smelled it and immediately hooked it.
(c) to kill the grasshopper. The leech, also known as the leech, is adsorbed on the surface of humans or aquatic animals, and it absorbs blood. The method of killing: The loofah with coagulated pig blood in the pores was placed on the four corners of the pond in the evening. On the second day, the loofah was collected and the grasshopper was drilled into the collaterals to kill it.
(d) Killing blue mud. The green mud moss is a few filamentous green algae, which generally grow in the summer, and after its large number of reproduction, it forms a green filament. Juvenile fish are often inadvertently trapped in green mud and struggle to die. In addition, the green mud moss also consumes nutrients in the pool and affects the reproduction of plankton. Kill method: (1) with copper sulfate Quanchiposa. (2) Sprinkle the ash on the green mud and cover the algae. (3) First, artificially remove the Qingniu moss in the pond, then inject the fertilizer and water, and inject 30%-40% of the total water in the pond into the fertilizer, and apply the decomposed manure to 150 kg per 0.067 hectare (mu). These matters shall be completed within 2 days. The pool water quickly became fat and the blue mud moss was completely removed from the conditions of survival.
(e) Kill the lake. Lake trout is an overgrowth of Microcystis aeruginosa (a cyanobacteria) in water. Because of the glial membrane, the algae can't be digested after eating. At the same time, after the algae die, they sink into the bottom of the pond and produce toxic substances, which will cause the fish to die. Copper sulfate Quanchiposa can be used to kill the lake.
(6) Remove frog eggs. Frogs are an enemy to fish farming. Frogs not only prey on fry but also spread diseases. Frog eggs hatched after the hatching and fry competition, affecting the growth and development of fry. The method of clearing is to remove the egg mass and remove the mesh.
In addition to the killing methods described above, fishponds should be disinfected with clear lime and other drugs before they are stocked.
(b) Kill water snakes. The water snake feeds on aquatic animals such as fish, shrimp, muddy, and scutellaria, which is a great hazard to fry and fingerlings. Kill method: (1) Realgar egg kills water snake. Each 0.067 hectare (mu) seedling pond is cooked with 7-10 salted eggs in 20 g of realgar, and then shelled and put into the pool. (2) Lure killing method. The straw tied with stones is placed in the middle of the eggshells of fresh poultry and then immersed in the edge of the fishpond. In the evening, the fish is put into the pond. In the morning of the 2nd day, it is taken out of the pond and the straw is opened to kill the water snake. (3) bait hook fishing. With a hook, the frog hooked the frog on the surface of the surface of the water. The hooked frog made a noise on the surface of the water. When the water snake heard it, he smelled it and immediately hooked it.
(c) to kill the grasshopper. The leech, also known as the leech, is adsorbed on the surface of humans or aquatic animals, and it absorbs blood. The method of killing: The loofah with coagulated pig blood in the pores was placed on the four corners of the pond in the evening. On the second day, the loofah was collected and the grasshopper was drilled into the collaterals to kill it.
(d) Killing blue mud. The green mud moss is a few filamentous green algae, which generally grow in the summer, and after its large number of reproduction, it forms a green filament. Juvenile fish are often inadvertently trapped in green mud and struggle to die. In addition, the green mud moss also consumes nutrients in the pool and affects the reproduction of plankton. Kill method: (1) with copper sulfate Quanchiposa. (2) Sprinkle the ash on the green mud and cover the algae. (3) First, artificially remove the Qingniu moss in the pond, then inject the fertilizer and water, and inject 30%-40% of the total water in the pond into the fertilizer, and apply the decomposed manure to 150 kg per 0.067 hectare (mu). These matters shall be completed within 2 days. The pool water quickly became fat and the blue mud moss was completely removed from the conditions of survival.
(e) Kill the lake. Lake trout is an overgrowth of Microcystis aeruginosa (a cyanobacteria) in water. Because of the glial membrane, the algae can't be digested after eating. At the same time, after the algae die, they sink into the bottom of the pond and produce toxic substances, which will cause the fish to die. Copper sulfate Quanchiposa can be used to kill the lake.
(6) Remove frog eggs. Frogs are an enemy to fish farming. Frogs not only prey on fry but also spread diseases. Frog eggs hatched after the hatching and fry competition, affecting the growth and development of fry. The method of clearing is to remove the egg mass and remove the mesh.
In addition to the killing methods described above, fishponds should be disinfected with clear lime and other drugs before they are stocked.
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