Granule agent for control of soil insects and preparation method thereof

Abstract

The invention relates to a granule agent for control of soil insects, which comprises the following raw materials, by mass, 5%-10% of a first active ingredient (fosthiazate), 5%-20% of second active ingredients (organophosphorus and carbamates), 2%-5% of wetting agents, 4%-10% of dispersing agents, 1%-10% of adhesion agents, 1%-15% of disintegrating agents, 30%-80% of carriers and 0.05%-0.1% of warning colors. A preparation method of the granule agent comprises the following steps: evenly mixing pesticide active ingredients after the pesticide active ingredients are adsorbed by the carriers, adding the wetting agents, the dispersing agents, the disintegrating agents and the warning colors, and evenly mixing according to the weight percent; smashing the mixture through a sand mill or a jet mill to enable the grain size to be 1.5-5mum; and finally adding water solution containing the adhesion agents and having the total weight of 300-1,400kg, drying at 120-180 DEG C after extrusion, spraying or granulation through a fluidized bed, and extracting granules with the grain size to be 0.27mm-2.7mm after screening through a vibrating screen so that qualified products are obtained. The granule agent for control of the soil insects has the advantages of achieving good effects in the aspect of control of the soil insects, achieving the aim of overall control of the soil insects and avoiding generating damage to the environment, people and livestock and other beneficial organisms.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a granule for controlling underground pests and a preparation method thereof. Background technique [0002] Subterranean pests refer to pests that live in the soil as adults or at a certain stage in their life history and harm the seeds of flowers and trees, the underground parts of seedlings or the main stems near the surface soil. Subterranean pests have a wide range of hosts, not only harmful to vegetables, but also harmful to flowers, wheat, corn, sorghum, lawns, tobacco, fruit tree seedlings, etc. It is distributed all over my country, and the types of occurrence vary from place to place. In North China, there are mainly nematodes, mole crickets, grubs, midges, cutworms and root maggots. After the crops are damaged, the light ones will wilt, the growth will be slow, and the heavy ones will wither and die, resulting in lack of seedlings and broken ridges, resulting in red...

AI Technical Summary

Problems solved by technology

At present, thiazophosphine is mainly used in granules, but most of them are single doses, which leads to the singleness of preventio