We all know that potassium permanganate is a strong redox agent, and it is a kind of general surgical drug for humans and animals. It is commonly known as pp powder. Its solution has strong functions of sterilization, disinfection and antisepsis. Experiments have shown that the use of different concentrations of solutions to prevent flowering seedling damping-off and blight, downy mildew, soft rot, blight, root rot, virus disease and other diseases, the effect is very significant. At the same time, it contains two kinds of nutrients, manganese and potassium, necessary for plants, which can promote plant growth. According to medical experts, the drug is rich in drug sources, low in cost, sold in pharmacies around the country, easy to purchase, and safe and non-toxic to humans and animals when used, has no residue, no harm to the crops, and has no pollution to the environment. Therefore, potassium permanganate is a fungicide that combines both medicinal and non-toxic, non-toxic, non-polluted vegetables and flowers. Its prevention and control of plant diseases mainly include the following: 1. Control of damping-off, blight, petunia, red string, and marigold. After emergence, 800 to 1000 times (first diluted and then concentrated) spray every 7 to 10 days. . According to the test, the efficacy of potassium permanganate on damping-off disease at seedling stage was as high as 97%, and the effect was significantly better than that of carbendazim, zearazine, pentachloronitrobenzene, and chlorsulfuron. Second, the prevention of downy mildew Practice has proved that the use of potassium permanganate to control plant downy mildew has a good effect, significantly better than chlorothalonil, and other pesticides such as zinc. For example, geranium is sprayed with potassium permanganate from 800 to 600 times before emergence from 1 heart to flowering, 5 to 7 days, and sprayed 4 times, which can effectively prevent the occurrence of downy mildew. If there is a central disease strain, spraying 600 times with potassium permanganate and spraying three times, with an interval of 5 days, has a good control effect on downy mildew. Third, prevention of soft rot Potassium permanganate can effectively control a string of red, snapdragon, marigold soft rot. If soaked in pre-soaked high-temperature water for 1 hour, remove it and put it in 1000-fold solution of potassium permanganate to soak seeds for 2 hours, and spray it with 800-600 times solution for 3 to 4 times at the seedling stage to effectively control soft rot. , And can cure downy mildew. Fourth, prevention and treatment of viral diseases Potassium permanganate effect of preventing and treating plant virus diseases is significantly better than that of viruses A, bacterin and other pesticides. In the early stage of disease, the entire plant was sprayed with 600-800 times liquid, once every 5 to 7 days, and even sprayed 3 or 4 times. If potassium permanganate is used in combination with double-acting booster virus K equal to 800 to 1000 times, the effect of preventing and treating viral diseases is better, not only can control the spread of viral disease, but also can make the disease disappear and restore vitality. The role. However, attention should be paid to the prevention and treatment of virus disease, the prevention and treatment of sucking pests on the plants should be conducted to prevent insects from transmitting viruses. V. Sterile chamber sterilization Potassium permanganate is added to the formalin solution to generate formaldehyde vapor, and sterilization of the edible mushroom inoculation box and chamber has good sterilization effect. For fumigation, 10 ml of formalin was placed in a cup per cubic meter of space. Five grams of potassium permanganate particles were quickly added, and the boxes and chambers were fumigated for 4 to 6 hours. In the use of potassium permanganate spray, it should be noted that when mixing constantly stirring, so that the drug particles are all dissolved, and with the use of to prevent long-time oxidation failure. In addition, spraying should be performed around 9:00 AM or after 4 PM. 7 Seedlings in front of leaves were washed with water after 5 minutes; seedlings were treated with low concentrations and adult plants with high concentrations. Six, sowing soil disinfection Potassium permanganate dubbed 800 to 1000 times the solution, with a sprayer for detailed spraying, sprayed with plastic film covered for 7 days, sowing with this medicine soil can effectively prevent plant seedling blight, Stalk rot, damping-off disease, etc. Preparation of potassium permanganate solution with well water, river water, tap water, etc. can be, but avoid using stagnant water, sewage, hot water, etc., otherwise it will reduce the bactericidal effect, due to the reduction reaction of potassium permanganate and organic matter, will generate dioxide Manganese loses its bactericidal effect. Therefore, it can only be used externally and can only be used with it.
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