No one dared to say that he had not used pesticides. But after playing the pesticide for so many years, in the following situations, are you sure you know what to do? Pesticide residue? How to break? Pesticide residue, of course, is not to wait until it has been left to solve, this time is too late, you must know how to control in advance. 1. Minimize the use of pesticides. The selection of pest-resistant varieties is the most economical and safe method to control pests and diseases; strengthening management after sowing, creating environmental conditions suitable for crop growth and not conducive to the occurrence of pests and diseases can effectively reduce the occurrence of pests. 2. Specify the scope of use of pesticides. According to the chemical nature and toxicity of pesticides, it is forbidden to use highly toxic, highly toxic and long-lasting pesticides on some crops. For example, phoxim used to control fruit tree pests must be used 30 days before fruit harvest. 3. Strictly control the application concentration, application amount, dosage form, frequency and application method of pesticides. In the agricultural dosage form, the amount of the emulsion oil is large, the milk powder and the wettable powder are the second, and the water agent is lower. In the application method, the seed treatment and the soil treatment are higher than the spray and the powder residue. 4. Control the time of application. Strictly follow the last application time before harvest. According to the safety interval of various pesticides, and according to the principle of early treatment, prevention and treatment in advance. The pesticide is sprayed wrong? There are two kinds of hazards to plants in general. The most obvious change is that spots, withered leaves, leaf rolling, deciduous fruit falling, etc. will appear on the foliage or on the fruit. There is also a performance that takes a while to show, such as weak photosynthesis, delayed flower bud formation and fruit ripening, dwarf malformation, and deterioration of flavor and color. Once the fruit tree is found to be phytotoxic, the following measures should be taken immediately to rescue: Flush Since many pesticides are not washable, it is a feasible method to rinse with water if it is accidentally sprayed or sprayed. If the concentration of the spray is too large, use a sprayer to fill the water and repeatedly rinse the leaves of the fruit tree to better wash away the remaining residues on the surface. 2. Fertilizing water It is necessary to supplement some quick-acting fertilizers with watering, and then cultivating the loose soil to promote the normal growth and development of the fruit trees as soon as possible. At the same time, spraying 0.3%-0.5% urea and 0.2%-0.3% potassium dihydrogen phosphate on the foliar surface can improve the nutritional status of the fruit trees and enhance the root absorption capacity. 3. Spray potassium permanganate Potassium permanganate is a strong oxidant and has the function of oxidative decomposition. If 6000 times of potassium permanganate solution is sprayed, it is also an effective method for relieving pesticides. Is there a doorway for spraying? Generally speaking, farmers’ friends have sprayed a lot of pesticides. If they say that the vegetable growers will not spray drugs, he may be anxious with you, but in fact, there are not many people who can actually apply scientific pesticides. How to scientifically Spraying? 1. Grasp the timing of spraying It is common for vegetable farmers to get used to spraying medicine for three or four days, thinking that they can sit back and relax. In fact, this method is very wrong, not only the cost is increased, but also the drug is particularly prone to cause rapid increase in pest resistance, so that it cannot be controlled when it occurs. A reasonable method is to use the drug at the beginning of the pest, and the disease is recommended to spray a protective fungicide on a regular basis. At the beginning of the disease, a symptomatic therapeutic fungicide is taken according to the type of the disease. 2. Suitable amount of liquid spray The amount of liquid spray is not as good as possible. Usually, there are often vegetable farmers who ask me to spray a few barrels of water when spraying. In fact, this is a problem that cannot be answered. The most reasonable amount of liquid spray when spraying is to spray the leaves to the surface and it is just the best. good. Scientific experiments have shown that if the amount of liquid remaining on the leaves after spraying the leaves is only about half of that when the liquid drops on the leaves, not only a lot of waste is caused when spraying the dripping water, but also the actual control effect is large. discount. Some vegetable farmers are accustomed to spraying liquids very little, and the concentration of drugs is very high. This is also unscientific, because it is not only prone to phytotoxicity, but also the phenomenon of leakage is serious, the target is not sprayed, and the control effect is not satisfactory. 3. Different spraying targets, different spraying positions If spraying drugs to control pests such as thrips, mites, and whitefly, focus on the young or middle part of the plant. If the general disease is controlled, focus on spraying the old leaves that are easy to be affected in the middle and lower parts. For diseases such as disease, blight, and blight, the base of the stem should be sprayed with emphasis. 4. Preparation of liquid medicine When using the pharmaceutical liquid, it is recommended that you use the second dilution method, that is, dissolve the pesticide in a small amount of water, and then add it to the water evenly, so that the agent can be dissolved more uniformly in water and the effect is better. 5. Pesticide mixing sequence If you spray a variety of pesticides at a time, such as insecticides , fungicides, foliar fertilizers, etc., you must remember that when you use the pharmaceutical liquid, you must first add foliar fertilizer, then add powder to kill or kill the powder. Insecticide, and finally add the pesticide of the emulsion type. In this order, the efficacy of the drug is less affected, and conversely, it may have a great impact or even failure on the effects of various pesticides. 6. Spraying method If a manual sprayer is used, it is best to spray against the blade. If it is a mister or a high-pressure electric sprayer, it should be sprayed parallel to the top of the plant. If the plant is sprayed, there will be a lot of liquid spray. Ground, causing waste. Spraying insecticides and bactericides is generally a person standing on the upper air vent, spraying the front side or just spraying the left or right side, and spraying the herbicide, especially the ground-sealed herbicide, is generally a reverse spray to destroy the film. More pesticide knowledge , please pay attention to China Pesticide Network Indoor Led Wall Light,led wall light indoor,indoor led light wall bedroom,modern wall lights indoor led ZHONGSHAN G-LIGHTS LIGHTING CO., LTD. , https://www.glightsled.com.jpg)