1, pH is an important factor affecting the effectiveness of each component. Under alkaline conditions, dithiocarbamate fungicides such as carbamates, pyrethroid insecticides, thiram and dioscin ring are prone to hydrolysis or complex chemical changes, thereby destroying the original structure. Under acidic conditions, 2,4-D sodium salt, 2A 4 sodium chloride salt, etc. will decompose, thus reducing the efficacy.
2. Organic sulfur and organic phosphorus pesticides cannot be mixed with pesticides containing copper preparations. For example, dithiocarbamate fungicides, 2,4-D salts herbicides and copper preparations are used together and lose their activity due to complexation with copper ions.
3. Microorganism-derived insecticides and systemic organophosphate insecticides cannot be mixed with fungicides.
4. Emulsifiable concentrates or wettable powders are used in combination, requiring no delamination, slickening or sedimentation.
5, should avoid the mixture of phytotoxicity, chemical composition of the active ingredients in the composition of the mixture may produce phytotoxicity, such as lime sulfur mixed with Bordeaux mixture can produce harmful copper sulfide, but also increase the soluble copper ion content; butachlor, etc. Cannot be mixed with organic phosphorus and carbamate insecticides.
6. Insecticide mixtures include: A powder, B powder, Xin emulsion, Kang Ling, and other fruits.
7. Insecticides and fungicides are mixed and mixed in the following forms: killing pines and rice with different rice cultivars, dimethomorph carbendazim, and methamidophos different rice vines. Most of them are currently used.
8. There are few varieties of pesticides, fungicides and herbicides mixed.
9. There are many types of bactericide mixtures, including seed dressing double, metalaxyl MnZn, polysulfide suspension, and bacteriocin.
10, plant growth regulator mixed with fewer varieties. Such as the use of mixed BC and chlormequat, gibberellin mixed with naphthalene acetate and so on.
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