The invention discloses an avermectins and
fenbutatin oxide-containing water suspending agent insecticidal
pesticide. A water suspending agent consists of the following components in percentage by weight: 5 to 60 percent of avermectins and
fenbutatin oxide, 1 to 10 percent of dispersant, 0.5 to 5 percent of
wetting agent, 0.1 to 1 percent of thickening stabilizer, 1 to 5 percent of
antifreeze, 0.1 to 1 percent of defoaming agent and the balance of water, wherein the content ratio of the avermectins to the
fenbutatin oxide is 1:1-50. The invention also discloses a preparation method for the water suspending agent insecticidal
pesticide. The method comprises the following steps of: first, shearing the weighed avermectins, fenbutatin
oxide, dispersant,
wetting agent,
antifreeze and water in a reaction kettle; then,
grinding sheared materials and adding the weighed defoaming agent with
grinding; and finally, adding the weighed thickening stabilizer and continuing shearing to obtain the water suspending agent insecticidal
pesticide. The medicament of the invention can perform
synergy on pests from a plurality of aspects so as to fulfill the aim of effectively controlling the pests by using low medicament dosage, and has the characteristics of low medicament cost, particularly good effect on killing citrus red mites and environmental friendliness.