Microcapsule targeting pesticide preparation for controlling dendrobium officinale insect damage

Abstract

The invention relates to a preparation method of a microcapsule preparation having targeting effects on dendrobium officinale insect damage. The microcapsule comprises the following components in percentage by weight: 2 to 10 percent of methaldehyde, 1 to 10 percent of capsule core solvent, 0.3 to 1 percent of protective colloid, 1 to 5 percent of capsule wall material, 2 to 5 percent of wetting dispersant, 0.1 to 0.5 percent of viscosity modifier and the balance of water. Microcapsule suspending agent is prepared by taking methaldehyde as a capsule core by an interfacical polymerization method. Because methaldehyde has peculiar aroma which snails and land slugs like better, the microcapsule has targeting specificity; and the microcapsule preparation has the advantages of long pesticide effect, high insecticidal efficiency, simple preparation process, and the like.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a method for preparing a microcapsule targeted pesticide suspension for dendrobium officinale pests. Background technique [0002] Dendrobium candidum Wall.Ex Lindl is a traditional precious and rare Chinese medicinal material, which has unique effects such as nourishing the stomach and promoting body fluid, nourishing yin and clearing away heat. Before the 1990s, my country's medicinal Dendrobium was basically collected from wild resources in tropical and subtropical virgin forests. The huge market demand for a long time has caused excessive harvesting, resulting in wild Dendrobium being endangered. What's more serious is that due to indiscriminate digging and overharvesting, the natural environment on which wild dendrobium depends is facing devastating damage. [0003] At present, Dendrobium candidum has been artificially cultivated, but in the process of planting Dendrobium candidum...

AI Technical Summary

Problems solved by technology

[0003] At present, Dendrobium candidum has been artificially cultivated, but in the process of planting Dendrobium candidum, pests such as snails and slugs are often encountered to harm the shoots and thin stems of Dendrobium candidum, which will cause great harm to the planting process of Dendrobium candidum, seriously affecting this industry. Production of an endangered rare medicinal plant

[0004] With the development of science and technology, there are new requirements for the development of pesticides. Traditional pesticides are highly toxic, and there are many pesticide residues in plants, which will penetrate into soil, rivers or groundwater, affecting people's health, reducing soil quality, and causing Environmental pollution, so the formulation of pesticides is the direction of pesticide development; in addition, chemical pesticides also have the characteristics of decomposing under light, unstable to water, special odor, strong corrosion, etc., and the direct use effect is not ideal, or even unusable; With the continuous enhancement of people's awareness of safety, environment and ecological sustainable development, microcapsules have attracted people's attention, and it can overcome the above defects