Diazinon coated slow-released granule preparation method

The invention discloses a diazinon coated slow-released granule preparation method which mainly includes the steps: preparing suspension liquid containing diazinon; preparing diatomite granules loading pesticides; preparing coating agents and coatings. According to the method, the suspension liquid of the diazinon is injected into holes of the diatomite granules, diazinon molecules adhere in the holes of the diatomite granules through Van der Waals force, explosion of the pesticides is avoided, the outsides of the diatomite granules loading the pesticides are coated, and release of the diazinon is further slowed. Compared with original pesticides, diazinon coated slow-released granules prepared by the method have the advantages of slow release and long effect, application amount is greatly reduced, use ratio is greatly improved, effects of the original pesticides preventing diseases and insect pests can be improved, agricultural production cost is reduced, environmental pollution caused by the pesticides can