With the rapid development of vegetable planting area and the increase in the introduction and development of specialty vegetables, farmers' heavy cropping and non-standard application of pesticides have caused a wide range of diseases and complex situations in vegetable production. Many vegetable farmers are still preventing and controlling vegetable diseases. Although public opinion has repeatedly emphasized pollution-free production, there are still some problems that cannot be ignored in actual production, mainly in the following aspects. 1. The backward cultivation measures and pest control measures are incompatible with the cultivation of fine varieties. The current situation of disease prevention and treatment drugs is chaotic, mixed and miscellaneous. The old vegetable farmers rely on their old experience, not in accordance with the pharmacological and medicinal application of pesticides, randomly shorten the effective interval, and arbitrarily increase the dosage and blindly mix the medicines, making the vegetables grow in the "medical treatment is deadly (residual)" environment for a long time. in. 2. High-priced vegetables are mixed with more drugs. The higher the price of vegetables in the area where vegetables are planted, the stronger the consciousness of vegetable farmers protecting fruits and vegetables, lest the vegetables get sick. Once the incidence of rapeseed field is desperately spraying, sometimes only a single disease occurs, and it is necessary to add several additional agents for the treatment of other diseases, so that the vegetable plants will be covered with a thick coat of drugs, which will seriously inhibit the photosynthesis of the leaves. The role of normal growth, making the blade stiff embrittlement phenomenon generally occurs. 3. Only focus on disease prevention, neglecting the safety of pesticides on vegetable growth. Inferior pesticides, imitations, or sulfur-based compound pesticides are very irritating and harmful to vegetables. With the change of planting structure, farmers who traditionally cultivated field crops are converting to the vegetable industry. Although many new farmers have production hardware, such as scaffolds and fine seeds, their management and disease prevention technologies are still weak. blank. This gives unscrupulous agricultural dealers the opportunity to run counterfeit medicines and secondary drugs. They have deceived (mutually) the new vegetable growers who knew half what they knew. They said how good and magical a certain kind of medicine is, and that a certain kind of pharmacology will be better prevented, and that some kind of nutrients will strengthen the body. . With unscientific methods of compounding drugs, new farmers are induced to use more drugs and drugs, resulting in the phenomenon of falling, fruiting, and injury. 4. The backward pest control concept is incompatible with the pollution-free vegetable production standards. As far as the prevention of vegetable diseases is concerned, the requirements of non-pollution production of vegetable farmers can generally be complied with. When the epidemic diseases occur, there is only one concept left for pollution-free prevention. The mood of onset drug use contradicts the restrictions on the implementation of the drug for the production of pollution-free production standards. Among them, vegetable farmers dominated by pesticide dealers accounted for the majority. What medicines are often used by farmers, and what medicines are poisonous (drugs) are large, what medicines are used. The pesticide residue standards allowed for vegetable production are difficult to achieve. 5. The deficiency of the disease and the harm caused by the disease and the virus disease are confusing, that is, the drug abuse; the farmers lack the basic knowledge of pest control, there are some incorrect methods of drug use. It is precisely because of these phenomena that the incidence of vegetable diseases, insects, grasses, medicines, and salt injuries has become increasingly serious. Especially in protected areas, vegetables grown in facilities, and the symptoms of various diseases are not typical due to seasonal differences, climate differences, and medication confusion, making it difficult to identify. In the face of the above problems, we hope that friends of vegetable farmers and agricultural products distribution will reflect and correct them. Fei County Mingtao Electronic Co.,Ltd , https://www.yourbeautyassistant.com