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 and suspension rate). Wait). For example, most organophosphorus pesticides cannot be mixed with Bordeaux mixture, stone sulphur mixture, etc., and powders cannot be mixed with wettable powders and soluble powders.
Second, after mixing different pesticides, the crops should not be phytotoxic. For example, when the organophosphorus pesticide is mixed with the enemy, the rice will cause phytotoxicity; the mixture of Bordeaux mixture and the stone sulphur mixture will easily cause phytotoxicity to the crop.
Third, after the pesticides are mixed, the toxicity is not increased, and the safety of humans and animals is guaranteed.
Fourth, mixed use should be reasonable, including reasonable mix between varieties, such as the control of soybean field grass weeds, can be used alone to catch the net, cover grass can be prevented, and then use the two mix, although feasible from the stability of the drug, but is mixed The allocation is unreasonable, that is, it does not increase the efficiency, and does not expand the scope of prevention and control. Mixed use is not necessary. The cost is reasonable, and the pesticide is mixed to save labor and time and improve economic benefits. If the mixture is made into a mixture, the additional cost is not allowed.
Fifth, pay attention to the antagonism between pesticide varieties to ensure the effect of mixed use. For example, the combination of bentazon and naputo reduces the control effect on grass weeds due to antagonism.
Second, after mixing different pesticides, the crops should not be phytotoxic. For example, when the organophosphorus pesticide is mixed with the enemy, the rice will cause phytotoxicity; the mixture of Bordeaux mixture and the stone sulphur mixture will easily cause phytotoxicity to the crop.
Third, after the pesticides are mixed, the toxicity is not increased, and the safety of humans and animals is guaranteed.
Fourth, mixed use should be reasonable, including reasonable mix between varieties, such as the control of soybean field grass weeds, can be used alone to catch the net, cover grass can be prevented, and then use the two mix, although feasible from the stability of the drug, but is mixed The allocation is unreasonable, that is, it does not increase the efficiency, and does not expand the scope of prevention and control. Mixed use is not necessary. The cost is reasonable, and the pesticide is mixed to save labor and time and improve economic benefits. If the mixture is made into a mixture, the additional cost is not allowed.
Fifth, pay attention to the antagonism between pesticide varieties to ensure the effect of mixed use. For example, the combination of bentazon and naputo reduces the control effect on grass weeds due to antagonism.
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