种子包上一层外衣,使它具有防病虫及其它特点在国际上已普遍应用。从种子公司售出的种子都经过处置,除防治病虫的种衣外,还出现增加肥效的、使种子表面更光滑的、小种子增大丸粒的……。我国的种衣技术及种衣剂工作开展较迟,是改革开放后才发展起来的,目前都是针对防治病虫而研制、生产的种衣剂。随着农业生产的发展以及农业产业化的进程加快,许多地方对小麦已实现全部包衣下种,玉米使用 The seeds are coated with a layer of coats to make them pest-preventive and other features that have been commonly used internationally. Seeds sold from seed companies are all disposed of, in addition to seed coats to control pests and diseases, there have also appeared to increase fertilizer efficiency, make the seed surface smoother, and small seeds increase the size of pellets. The development of the seed coating technology and seed coating agent in our country started relatively late and was developed after the reform and opening up. Currently, they are all seed coating agents developed and produced for the prevention and control of pests and diseases. With the development of agricultural production and the acceleration of the industrialization of agriculture, many places have achieved full coating of wheat and use of corn.