Nanometer acaricide with hexamefenoic acid encapsulated by chitosan and preparation method of nanometer acaricide

The invention relates to the technical field of plant protection, and discloses a nano acaricide with hexamefenac encapsulated by chitosan and a preparation method of the nano acaricide. Comprising the following raw materials in parts by mass: 12.75 to 16.25 parts of cellulose nanocrystal suspension with the purity of 2.53 percent, 0.28 to 0.42 part of abamectin, 0.33 to 0.42 part of dopamine hydrochloride with the purity of 98 percent, 4.55 to 16.25 parts of acetone, 0.32 to 0.45 part of tris (hydroxymethyl) aminomethane and 78.68 to 87.14 parts of deionized water. The raw materials of the bio-based nano slow-release acaricide are easy to obtain, the bio-based nano slow-release acaricide has good agricultural production and plant protection application potential, and due to the simple synthesis method, green synthesis raw materials and excellent phytophagous spider mite killing and plant resistance induction effects, the bio-based nano slow-release acaricide has high application and popularization value. 本发明