Fluoxastrobin and pyraclostrobin compound suspension agent and preparation method thereof

Abstract

A fluoxastrobin and pyraclostrobin compound suspension agent and a preparation method thereof. The invention relates to the technical field of prevention and control of cucumber downy mildew. The compound suspension agent is composed at least of 10 parts of fluoxastrobin, 30 parts of pyraclostrobin, 3 parts of styryl phenol polyoxyethylene ether phosphate triethanolamine salt, 2 parts of a naphthalenesulfonate formaldehyde condensate, 0.1 parts of xanthan gum, 0.1 parts of sodium benzoate and 0.1 parts of a defoamer, deionized water added to 100 parts. The preparation method includes the steps of pumping the raw materials into a blending kettle and mixing and stirring the raw materials; initially grinding the mixture through a colloid mill and fine-grinding the mixture through a sand mill, and collecting a sample and analyzing the sample; after the sample is qualified, filtering the processed mixture, metering a product, and packaging and storing the product. In the compound suspension agent, the ratio of fluoxastrobin to pyraclostrobin is 1:3 and the concentration of the compound suspension agent is 40%, so that the range of significant synergistic effect is reached, while preparations blended in other ratios cannot reach the range of the significant synergistic effect.

Description

technical field [0001] The invention relates to the technical field of cucumber downy mildew prevention and control, in particular to a compound suspending agent of fluoxastrobin and pyraclostrobin and a preparation method thereof. Background technique [0002] At present, the existing fungicidal composition for the prevention and treatment of cucumber downy mildew, for example, the Chinese patent "CN 104872212A" discloses a "drug for the prevention and treatment of cucumber downy mildew", wherein the effective active ingredient is 80% mancozeb can be 10-16 parts of wet powder, 8-12 parts of 75% chlorothalonil wettable powder, 10-15 parts of 40% ethyl phosphorus aluminum wettable powder, 3-5 parts of zinc sulfate, 6-10 parts of garlic oil, 5-7 Parts of Forsythia, 4-6 parts of Folium Folium, 4-8 parts of Honeysuckle, 4-6 parts of Scutellaria chinensis, 6-10 parts of Tripterygium wilfordii. In addition, the Chinese patent "CN 103621584 A" discloses a "drug for the prevention ...

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Problems solved by technology

For example, the prepared 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, etc., resulting in uneven spraying and local phytotoxicity of crops. The main reason is that it helps There are different defects in the selection of agents and fillers

[0006] 3), the problem of compounding, through the toxicity test, heat storage stability test and co-toxicity coefficient measurement of several specific proportions disclosed by the above-mentioned several bactericidal compositions, it was found that no obvious additive synergistic effect could be achieved

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