A kind of sustained-release agent whose active ingredient is biological source pesticide

Abstract

The invention relates to a slow-release agent with an active ingredient of a biological source pesticide. The slow-release agent also comprises active ingredients of lentinan and garlicin. A method for preparing the slow-release agent comprises the following steps: mixing organic modified bentonite with acetone solutions of lentinan and garlicin, and performing reduced pressure evaporation to recover a solvent, thereby obtaining a powdered organic modified bentonite kernel adsorbed with lentinan and garlicin; then uniformly dispersing the powdered kernel into sodium alginate solution with the mass ratio of 3%, then adding into a chitosan oligosaccharide aqueous solution, and performing high-speed homogenization for 1.5-2 hours; and adjusting the pH to be neutral, then performing vacuum filtration or centrifugal separation on an obtained suspension, and drying the solid part to obtain micro granular slow-release agent with the particle size of 50-600 microns. In the slow-release agent, garlicin and lentinan are compounded, so that the dosage of the active ingredients is reduced, the effects of preventing and treating watermelon virus diseases are effectively enhanced, and the slow-release agent is quick in response and long in lasting period and does not have influence on non-target crops.

Description

technical field [0001] The invention relates to a slow-release agent whose active ingredients are biological source pesticides, in particular to a slow-release agent whose effective ingredients are lentinan and allicin for preventing and treating watermelon virus diseases, and belongs to the field of biological pesticides. Background technique [0002] Watermelon virus disease, commonly known as small leaf disease, mosaic disease, after the watermelon is damaged, the leaves become smaller, the growth is slow, the plant is dwarfed, the flower organs are stunted, and the fruit cannot be set seriously, or the fruit is stunted after the fruit is set, deformed, the fruit is small, and the yield is low. Low, poor quality, lost commodity value. Watermelon virus mainly manifests as mosaic and fern leaf symptoms in the field. Mosaic leaf type: In the early stage, the top leaves appear yellow-green mosaic patterns, and later become shriveled and deformed, the leaves become smaller, t...

AI Technical Summary

Problems solved by technology

[0002] Watermelon virus disease, commonly known as small leaf disease, mosaic disease, after watermelon is damaged, the leaves become smaller, the growth is slow, the plant is dwarfed, the flower organs are stunted, serious fruit cannot be set, or the fruit is stunted, deformed, the fruit is small, and the yield is low. Low, poor quality, lost commodity value