At present, most farmers in rural areas are not very literate. Even if they are literate, they are rarely used according to the instructions. In the process of using pesticides , they mostly rely on the feeling of water ratio. Of course, they are more convinced that the recommended usage and dosage of agricultural resources dealers, and the distribution staff's letter of mouth to increase the proportion of the phenomenon often exists, in order to prove their own claims, showing the authenticity of pesticides, thereby increasing sales, increase profit. In fact, the state has strict regulations on pesticides and relatively safe and effective usage and consumption restrictions. It is necessary to increase the dosage for a long time. Although it can see certain effects in the short term, it is endless. This is not only easy to gradually increase the resistance of pests, but also allows the super-matching liquid to remain on the crops, causing certain damage to the human body. Pesticides are also medicines. Just like a patient taking an injection, they must be used in strict accordance with the condition and usage according to the instructions. Agricultural technicians or pesticide workers must also clarify the pests and diseases and dosages used for each drug. In the process of guiding farmers to use, they are not credible to open the river and increase or decrease the ratio. Â Â Â Biological pesticides http:// Nylon Lock Nut DIN985,anti-loosening Nut DIN985,stainless steel304 anti-loosening Nut,304 anti-loosening Nut Hebei Quanfang Fastener Co., Ltd , https://www.quanfangfastener.com