Cypermethrin/chlorpyrifos calcium carbonate sustained and controlled release agent and preparation method thereof

Abstract

The invention belongs to the technical field of pesticide preparation, and discloses a cypermethrin/chlorpyrifos calcium carbonate sustained and controlled release agent and a preparation method thereof. The cypermethrin/chlorpyrifos calcium carbonate sustained and controlled release agent is prepared from the following components in parts by mass: 10-20 parts of cypermethrin, 10-15 parts of chlorpyrifos, 20-25 parts of porous layered calcium carbonate, 8-12 parts of a wetting agent, 10-12 parts of a dispersing agent, 6-8 parts of an anti-freezing agent, 3-5 parts of a preservative, 6-9 partsof a defoaming agent and 5-7 parts of a thickener. The preparation method comprises the following steps: respectively preparing ethanol solutions of porous layered calcium carbonate and cypermethrin/chlorpyrifos; and adding other components into the conical flask, and carrying out vibration, suction filtration, washing and drying treatment to obtain the product. The cypermethrin/chlorpyrifos calcium carbonate sustained and controlled release agent provided by the invention is excellent in performance and good in insecticidal effect, is good in stability, is free of the phase separation after the long-time placement, and is large in application prospect.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparation, in particular to a cypermethrin / chlorpyrifos calcium carbonate sustained and controlled release agent and a preparation method thereof. Background technique [0002] At present, chlorpyrifos (Chlorpyrifos) is one of the most used organophosphorus insecticides in the world. It is widely used in agricultural production, and its use methods are diversified, including spraying, seed dressing, seed coating, soil treatment, etc. Although the pesticide is not directly used in water bodies, it has a strong potential for leaching and migration. It can easily penetrate into the aquatic environment through surface runoff and groundwater, and can accumulate persistently, thereby affecting the aquatic ecological environment. Cypermethrin is a pyrethroid insecticide with high efficiency and low toxicity. However, due to its stability to light and heat, it enters the water body during a large amou...

AI Technical Summary

Problems solved by technology

[0007] (1) Chlorpyrifos is easy to decompose when exposed to light, has high resistance, and has a strong potential for leaching and migration. It can easily penetrate into the aquatic environment through surface runoff and groundwater, and can accumulate for a long time, thereby affecting the aquatic ecological environment.

[0008] (2) Cypermethrin is stable to light and heat, and enters the water body during a large amount of use, causing a large number of residues in the water body, which poses a serious threat to the safety of aquatic organisms

[0009] (3) Calcium carbonate sustained and controlled release agent about cypermethrin / chlorpyrifos has not been reported yet in the prior art

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