What is the principle of mixing pesticides?

1. There is no adverse chemical reaction (such as hydrolysis, alkaline hydrolysis, acid hydrolysis or redox reaction) between the mixed varieties to ensure normal efficacy or synergism, and does not affect the physical properties of the agent (such as emulsification, suspension rate reduction) Wait). For example, most organophosphorus pesticides cannot be mixed with Bordeaux mixture, stone sulphur mixture, etc.; powders cannot be mixed with wettable powders and soluble powders.
2. After mixing different varieties, the crops should not be phytotoxic. For example, when the organophosphorus pesticide is mixed with the enemy, the rice will cause phytotoxicity, and the Bordeaux mixture is mixed with the stone sulphur mixture, which is easy to cause phytotoxicity to the crop.
3. After the pesticide is mixed, it will not increase the toxicity and ensure the safety of humans and animals.
4. Mixed use should be reasonable. Including the reasonable mix between the species, such as the control of weeds in the soybean field, the use of catching the net, covering the grass can be prevented, and then using the two mix, although feasible from the stability of the drug, but the mix is ​​unreasonable, both It does not increase efficiency, and does not expand the scope of prevention and control. The mixture of pesticides is to save labor and time, and to improve economic benefits. If the mixture is made into a mixture, the additional cost is not allowed.
5. Pay attention to the antagonistic effect between pesticide varieties, and ensure the mixed effect, such as the compatibility of bentazon and naputo, and reduce the control effect on grass weeds due to antagonism.
Huaxian County Station
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