Compound thiamethoxam and spirotetramat suspending agent and preparation method thereof

Abstract

The invention provides a compound thiamethoxam and spirotetramat suspending agent and a preparation method thereof and relates to the technical field of prevention and control of citrus tree scale insects. The compound thiamethoxam and spirotetramat suspending agent is prepared from, at least, 18 parts of thiamethoxam, 12 parts of spirotetramat, 3 parts of fatty alcohol-polyoxyethylene ether, 3 parts of styryl phenol polyoxyethylene ether, 0.3 part of xanthan gum, 0.4 part of sodium benzoate, 0.3 part of defoaming agent and the balance deionized water, and the total amount is 100 parts. All the raw materials are sucked into a preparation kettle and mixed and stirred and then are primarily grinded by a colloid mill, the mixture is finely grinded by a sand mill, sampling analysis is performed, and filtration, metering, package and warehousing are performed after the mixture is qualified. The 30% compound thiamethoxam and spirotetramat suspending agent can play an obvious synergic effect when being used through mixing according to the proportion of 3 to 2, and the range of the obvious synergic effect cannot be reached by other preparations used through mixing according to other proportions.

Description

technical field [0001] The invention relates to the technical field of citrus tree scale insect control, in particular to a compound suspending agent of thiamethoxam and spirotetramat and a preparation method thereof. Background technique [0002] At present, the existing insecticidal composition for controlling citrus scale insects, for example, the Chinese patent "CN 103814931A" discloses an "insecticidal composition containing spirotetramat and thiacloprid", the active ingredient of which is Binary compound of spirotetramat and thiacloprid. Among them, the mass ratio of spirotetramat and thiacloprid is 1-50:50-1, the mass ratio of active ingredients spirotetramat and thiacloprid in the preparation is 1%-80%, and the rest are allowed to be used in pesticides and accepted auxiliary components. Another Chinese patent "CN103814931 A" discloses an "insecticidal composition containing spirotetramat and thiacloprid", the active ingredient of which is a binary compound of spiro...

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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