Diafenthiuron and tolfenpyrad compound suspension agent and preparation method thereof

Abstract

A diafenthiuron and tolfenpyrad compound suspension agent and a preparation method thereof. The invention relates to the technical field of prevention and treatment of tea lesser leafhoppers on tea trees. The compound suspension agent at least includes 15 parts of diafenthiuron, 10 parts of tolfenpyrad, 3 parts of fatty alcohol polyoxyethylene ether, 3 parts of styryl phenol polyoxyethylene ether, 0.3 parts of xanthan gum, 0.4 parts of sodium benzoate, and 0.3 parts of a defoamer, wherein deionized water is added to 100 parts in total. The raw materials are all pumped into a preparation kettle and are mixed and stirred to form a mixture. The mixture is then subjected to primary grinding through a colloid mill and is finely ground in a sand mill. Sample analysis is then carried out, and if qualified, the mixture is filtered, metered and packaged and is stored in a storeroom. In a compound suspension agent being 25 mass%, the diafenthiuron and the tolfenpyrad are blended according to the ratio of 1.5:1, and at this ratio, a significant synergistic effect range can be achieved, while compound suspension agents in other blending ratios cannot reach the significant synergistic effect.

Description

technical field [0001] The invention relates to the technical field of prevention and control of tea tree green leafhoppers, in particular to a diafenthiuron and tolfenpyrad compound suspending agent and a preparation method thereof. Background technique [0002] At present, the existing insecticidal composition for preventing and treating tea leafhoppers, such as Chinese patent CN104322516 A discloses a "water dispersible granule for preventing and treating tea leafhoppers", and the active ingredients are calculated in parts by weight. : Chitooligosaccharide 0.1-3 parts, Azadirachtin 0.1-3 parts. The dispersing agent is selected from polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate; the wetting agent is selected from alkyl sulfate, alkyl sulfonate, naphthalene sulfonate; the disintegrant is selected from ammonium sulfate , urea, sucrose, glucose; binder is selected from diatomaceous earth, cornstarch, PVA carboxymethyl (ethyl) cellulose; filler is selected from...

AI Technical Summary

Problems solved by technology

For example, wettable powder is easy to cause product sticking, is not easy to disperse and suspend in water, or clogs the nozzle, and causes precipitation in the sprayer, resulting in uneven spraying

[0006] 3), the problem of compounding, by carrying out toxicity test, heat storage stability test and mixing co-toxicity coefficient measurement on several specific proportions disclosed by the above-mentioned several insecticidal compositions, it is found that no obvious synergistic effect can be achieved

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