The invention relates to a
pesticide and
fertilizer mixing particle agent for controlling soil insects, which has the advantages of low cost, no
pollution, no peculiar smell, strong absorption capability, good release effect, prevention of water and
soil loss, control of underground insects, and enhancement of
utilization rate of
fertilizer efficiency, and is suitable for leek, corn, peanut and soybean. The mixing particle agent contains the following raw materials based on the total weight: 0.1%-10% of
chlorpyrifos, 5%-20% of
coating agent, 6%-15% of
adhesive, 6%-10% of dispersant, and 45%-80% of NPK compound
fertilizer, wherein the NPK compound fertilizer accounts for 25%-60% of the total weight of the
medicine and fertilizer mixing particle agent; the
coating agent is light-weight clay or low-grade diatomite; the dispersant is
calcium dodecyl
benzene sulfonate; and the
adhesive is clay,
dextrin or the mixture of the clay and the
dextrin. The production method is characterized in that the
adhesive, the dispersant and the NPK compound fertilizer are mixed and granulated by a granulator; the
chlorpyrifos is dissolved in
vegetable oil or
organic solvent, diluted, uniformly sprayed to the surface of the prepared particle, coated by the
coating agent, and sieved, and then the particle agent with the
diameter of 1.0-4.75mm is prepared.