Pesticides are not unfamiliar to farmers, whether they are fruits and vegetables or crops, they are inseparable from pesticides. Pesticides can kill pests, reduce disease and ensure healthy growth of crops. However, for the commonly used pesticides, many people's practices are actually wrong. Let's take a look at the common mistakes in the use of pesticides. Pesticides recognize the common eight misunderstandings Misunderstanding 1: When configuring pesticides, how do you match them? When the actual blending of pesticides is blended, the operation is unscientific. For example, when several pesticides are blended, in practice, several agents are first poured into the sprayer at once, and then water is added. The correct way: Before pouring the medicine into the sprayer, add the appropriate amount of water to the sprayer, then pour the medicine to be blended into the container and drain it with water. Most farmers often pour all the medicine into the container once, in order to save trouble. Discharge once with water. Misunderstanding 2: Secondary dilution is useless Many pesticides require secondary dilution during use, and most growers are able to pour the medicament directly into the sprayer and dilute with water, often resulting in uneven concentration. Misunderstanding 3: As long as it is not rainy, you can spray 1. It is advisable to apply the medicine in the weather without rain or below 3 winds, and it is necessary to spray pesticides along the wind. 2. Spraying pesticides during the hot season in summer should be carried out before 10:00 am or after 3 pm, no spraying at noon, and the spraying time of the applying personnel should not exceed 6 hours per day. Misunderstanding 4: Did not apply according to instructions The pesticides are all based on self-perception, and the dosage is not strictly controlled. The recommended dosage of pesticide labels or instructions is generally determined after repeated trials. Do not arbitrarily increase the dosage or change the application method during use. Myth 5: You can use medicine at any time. Diseases, insects and grasses at different developmental stages have different resistance to pesticides. It should be prevented in advance, and many growers will spray drugs after the occurrence of pests, and the effect will be greatly reduced. There may be a feeling that the medicine is not good. In terms of pests, the pre-medicinal larvae of the 3rd instar are generally weak in resistance, and the premedication is recommended before the 3rd instar. In terms of disease, the pathogenic bacteria dormant spores have strong drug resistance, and the anti-drug resistance is weakened when the spores germinate. In terms of grass damage, weeds are more sensitive to medicinal agents in the germination and primary stages, and then gradually increase with the growth resistance. It is necessary to pay attention to the safety interval of pesticides to ensure that pesticide residues do not exceed the standards when agricultural products are harvested and marketed. Misunderstanding 6: Think of the front and back of the spray blade 1. The plant leaf dorsal cell tissue is loose, and there are many natural pores, while the leaf surface has a stratum corneum, and the pathogen is difficult to invade; 2, the leaf surface is exposed to direct sunlight, the surface temperature of the blade is high, the humidity is small, which is not conducive to bacterial invasion; on the contrary, the temperature and humidity environment on the back of the blade are suitable for the propagation of bacteria. Therefore, when spraying, use the method of spraying to re-spray the back of the blade, and the falling pesticide droplets can also fall well to the front of the blade, so that no dead spots in the control area are left, so that no spray is sprayed or leaked to ensure that Good control effect. Myth 7: Imported medicine is a good medicine In fact, pesticides will inevitably develop resistance during use. If a pesticide is used alone in a region for a long time, it will increase the resistance of the region. Therefore, when using pesticides, we must make a reasonable rotation. Different types of pesticides should be used to delay the development of resistance, thereby increasing the service life of each pesticide. Sticking to the use of pesticides can also reduce the development of pest resistance. Myth 8: Except for acidic and alkaline pesticides, other can be compounded. When mixing pesticides and mixing pesticides, the principle must be followed: two or more pesticides will not undergo chemical changes after mixing. If chemical changes occur, it means that these pesticides cannot be used. Because of the chemical reaction, harmful substances are produced, causing phytotoxicity. Organophosphorus, carbamate, pyrethroid insecticides and dithiocarbamate derivative fungicides are all sensitive to alkaline conditions and cannot be mixed with alkaline pesticides or substances. Organic sulfur bactericides are mostly sensitive to acidity and cannot be mixed with acidic pesticides. The above is about the common misunderstandings about the understanding and use of pesticides. After reading the above eight misunderstandings, you have several pesticides. From the content, we can see that if the pesticide is not used correctly, it will cause no reaction, or other problems such as harmful to plants. As an essential part of farming, pesticides must be followed. The correct way to use. DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.com