For many diseases of vegetables, we must understand its occurrence characteristics and ways of transmission, comprehensive prevention and control, use appropriate pesticide products, and lay a good combination of boxing in order to prevent and spread diseases more effectively. Below we analyze the characteristics of pathogens and transmission methods, and explore how to use drugs to better prevent and treat diseases. Combine Root diseases transmitted through soil, combined with flood irrigation Dead vegetables are one of the most difficult diseases to be dealt with by vegetable farmers. In recent years, it has been particularly serious on vegetables such as bell peppers, tomatoes and cucumbers. We have always reminded the vegetable farmers that “prevention is the priority†and preventive measures must be comprehensive and concrete. Before planting, soil disinfection will not be described here in detail. In order to avoid colonization of the colonized seedlings, it is necessary to sterilize the plug before colonization. The vegetable growers often use the glucanophane plus precic for dish cutting to kill pathogens, among which some additional rooting fertilizers such as chitin and amino acids can promote root germination and improve stress resistance. In addition, if a biological bacterial fertilizer is used in the planting hole during colonization, attention should be paid to chemical control and avoid the use of antibiotics, copper preparations, etc., so as not to kill the probiotics in the planting hole, and it is possible to use Prolac, Hymexazol, etc. for the activity of beneficial bacteria. Immerse the root of the less potent drugs. If you do not use biological agents, you can use a combination of ammonia, copper, mesitectin and other agents to irrigate the roots to prevent the occurrence of diseases. Combination of two stem diseases prevention and spraying Although many diseases can infect multiple parts of the plant, they often occur at a certain part of the plant at the early stage of the disease. For example, the bacillus blight often causes black stems; the cucumber blight causes stem drips, etc. To prevent and treat this type of disease, it can be done by spraying the stems and spraying the entire canopy. The pathogenic bacteria on the stalk lesion are relatively concentrated, and the vegetable farmer can scrape it off with a knife and apply it with a medicament. In addition, the resistance of stems is relatively strong, slow absorption, the use of drugs can increase multiples, such as foliar spray 33.5% quinoline copper with 750 times more liquid, stems can be applied to increase 200 to 300 times, some Powder agents, such as thiophanate methyl, can be smeared in a paste and applied directly. In addition to painting stalks, attention should also be paid to the spraying of pesticides on the foliage to prevent disease and spread disease and other parts of the plant. Combination fist three Diseases caused by airborne stems and leaves, sprayed and smoked There are many ways of transmission of diseases in winter shelters. Diseases transmitted through air currents occur frequently in winter, such as gray mold, downy mildew, etc. These diseases can produce a large amount of spores, which can be transmitted to various places in the shed through air currents. With the characteristics of high humidity and medium humidity, germs will multiply and cause disease epidemics, making it difficult to control. It is difficult to achieve the goal of controlling the speed of disease development and achieving the goal of cure without cutting off the route of disease transmission. So, what should we pay attention to in pesticide prevention? Smoke agents show great advantages. The main features of the smoke agent are prevention and treatment of the disease, to prevent the increase of humidity in the greenhouse, and the prevention effect is good, but the treatment effect is poor and the safety is relatively low. Therefore, we have always recommended that farmers combat the spread of airborne diseases. In the case of gray mold, for example, you can choose to spray procymidone, mofetil, and other drugs during the day when the weather is fine. At night, use procymidone, sclerotin, etc. to smoke the shed. Without wind, the time of smoking is approximately 6 to 8 hours. In areas where walls, columns, and films are not covered by spraying, the smoke agent can make up for the lack of control. Henan Aklly Filter Engineering Co., Ltd , https://www.akllyfilter.com