种衣剂是由有效成份、粘结剂和其它加工助剂组成，可直接或经稀释后包裹于种子表面，形成具有一定强度和通透性保护膜的农药制剂。种衣剂具有用量少、药效高、使用方便、对环境污染少等众多优点，愈来愈受到重视并推广。 日前，用于包衣的种衣剂多为杀虫剂、杀菌剂或二者的混剂 Seed coating is composed of active ingredients, binders and other processing aids, can be directly or after dilution wrapped in the seed surface, the formation of a certain strength and permeability of the protective film of pesticide formulations. Seed coating with less dosage, high efficacy, ease of use, less environmental pollution and many other advantages, more and more attention and promotion. Recently, most of the coating agents for coating are insecticides, bactericides or a mixture of the two