2. When using copper sulphate, special attention should be paid to the concentration, and do not dissolve in high-temperature water. Copper sulphate is toxic, and the safety concentration used is small. Before the pesticide application, the volume of fish pond water must be accurately calculated to determine the effective amount and ensure safe drug use. In addition, when dissolving copper sulfate, the water temperature must not exceed 60°C to avoid failure.
3. When using mercurous nitrate, do not use metal containers. Mercuric nitrate is very prone to corrosion of metal vessels and renders the chemical ineffective. And avoid high temperature heating.
4. The preparation of copper sulfate, ferrous sulfate, potassium permanganate and other drugs should be dissolved in the barrel. Preparation of potassium permanganate solution to use a clear water-soluble, water-soluble pond fertilizer will reduce the efficacy. When powdered chemicals such as bleaching powder and trichlorfon are dissolved, a small amount of water should be placed first, and the slurry should be mixed with a wooden stick, and then diluted with water to prevent the block from being eaten by the fish. When the two drugs are mixed, they must be dissolved separately and then mixed. All kinds of drugs must be used immediately.
5. Avoid using spoiled drugs. The dosage should be precise when spilling drugs in Quanchipia. If the drug is used in excess, it will cause dead fish, and if it fails to reach the standard, it cannot be completely sterilized and killed.
6. The time of using drugs should be selected at 9:00 am or 4:00 pm on a sunny day. Do not use under direct sunlight to avoid reducing the efficacy and achieving the goal of cure.
7. Workers should not leave the fish pond 2 to 3 hours after using the medicine. If fish floating head or dead fish are found, new water should be quickly injected to dilute the concentration of the medicine.
Author: College of Animal Science and Technology, Hunan Agricultural University
Green Peas, According to the color of their cotyledons, Peas are divided into two types: green skin, green peas, and
green skin yellow peas. Green peas are green-green peas. Peas in northeast China are the most famous. It is one of China's
important food crops. It has a history of 5,000 years of cultivation. Our company can provide two different frozen peas to meet the needs of different people.
The effect and effect of green peas
Daily
green peas can provide catechins and epicatechins as two kinds of
flavonoid antioxidants. When people get older, there will be more and
more free radicals in the body. Free radicals and aging are positively
related. Nutrition in green beans can resist. Free radical-induced diseases, delaying the speed of body aging, as well as anti-inflammatory, spectral antibacterial effects.
Kidneys of green peas
[Appropriate
population] Green peas are suitable for menopausal women, diabetes and
cardiovascular patients, and mental workers and dieters are also very
suitable for eating green Peas. These people can eat green beans to
improve disease and physical condition.
[Contrained
people] People with severe liver disease, peptic ulcer,
arteriosclerosis, kidney disease, gout, low iodine and other diseases
are not to eat green peas, so as not to aggravate the condition.
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