Preparation method of granular paecilomyces lilacinus biological nematocide

The invention provides a preparation method of granular paecilomyces lilacinus biological nematocide, and the method comprises the following steps of: preparing strain, producing strain, carrying out primary fermentation, carrying out secondary fermentation and pelleting. In the method, a culture medium comprises cane sugar, yeast, MgSO4, KCl, ZnSO4.7H2O and distilled water. By selecting various technological conditions in the preparation method of the paecilomyces lilacinus biological nematocide, the invention provides a method for producing the paecilomyces lilacinus biological nematocide on a large scale; and the prepared paecilomyces lilacinus biological nematocide is high in robe yield and low in production cost.