In recent years, the tragedy caused by improper use of pesticides is not uncommon. The problem of pesticides and pesticides has caused concern in all walks of life. How to prevent pesticides and pesticides? Let's take a detailed analysis of the pesticides network .
1. Use good quality pesticides. The emulsion requires clear and transparent, no flocculation, no precipitation, and can be dispersed by adding water, and there is no oil slick on the water surface. The powder requires fine and uniform powder and does not agglomerate. Wettable powders are required to be added to water to be soluble in water and uniformly dispersed. Deteriorating pesticides are prone to phytotoxicity.
2. Determine the dosage based on the effective amount of the agent. Do not increase or decrease the concentration of the drug used to dilute the water or the soil to the desired concentration.
3. Carefully prepare pesticides. When disposing the liquid, first inject 1/3 of the water into the clean container, then put the medicine, stir it and fill it with water. When using a wettable powder, first adjust the drug into a paste with a small amount of water before dispensing the pharmaceutical solution. The liquid medicine can be used as long as it is used, otherwise it will precipitate or degrade. The water required to dilute pesticides is clean soft water. Do not use water containing more organic matter and hard water containing calcium and magnesium ions.
4. Reasonably mix the medicine. Mixture of pesticides is worthy of promotion, but most pesticides cannot be mixed with alkaline substances. For example, organophosphorus pesticides cannot be mixed with alkaline pesticides such as Bordeaux mixture or stone sulphur mixture.
5. Pay attention to the spraying method. Spray pesticides should be even, the droplets should not be too thick and too heavy, and the distance between the nozzle and the crop should be appropriate. When applying poisonous soil, it is advisable to use a method of less soil and more to spread evenly. It can also be applied according to the need of applying stems, roots and other methods to improve the efficacy and avoid the occurrence of phytotoxicity. For example, using wetochlor to control weeds in rice fields, stem and leaf spray is more susceptible to phytotoxicity than soil mixing. The application of glyphosate is safer with a fan-shaped nozzle than with a conical nozzle.
6. Continuous medication should be separated by 7 to 10 days. Do not pay attention to the interval, easy to produce phytotoxicity.
For more pesticide information, please pay attention to China Pesticide Information Network
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