The effect of rational use of pesticide additives. The rational use of pesticide additives can often improve the safety of pesticides to plants and reduce the toxicity to humans and animals. Fillers: fillers can be used to dilute pesticide technical drugs, reduce the dosage of technical drugs, make technical drugs convenient for mechanical crushing, and increase the dispersibility of technical drugs. They are filling materials for manufacturing powders or wettable powders, such as clay and talc powder; Wet spreading agent: it can reduce the surface tension of water and make water easy to wet the solid surface.

When the liquid medicine is sprayed on the surface of the drug, it is easy to wet and spread on the surface of the drug, so as to improve the control effect, such as tea withering.

There are two kinds of dispersants: one is pesticide stock solution dispersant, which is a substance with high viscosity. Through mechanical action, the molten pesticide can be dispersed into colloidal particles, such as waste mucilage concentrate and pulp waste liquid concentrate; The other is the dispersant of pesticide preparations, which can prevent the powder from flocculating, so that the powdered pesticides can be well dispersed during spraying. Synergist: it has no insecticidal and bactericidal effect, but it can improve the insecticidal and bactericidal effect of the original drug.

Generally speaking, pesticide additives have no biological activity, but whether they are selected or not has a great impact on the efficacy of pesticide preparations. For example, the mixed emulsifiable concentrate containing 10% trichloroar and 30% diesel oil has similar herbicidal effect to the 20% trichloroar emulsifiable concentrate without diesel oil, but the dosage of trichloroar is twice the same; When using Bordeaux liquid, if 0.2%~0.3% bone glue is added into it, it can resist rain erosion and improve disease prevention effect.