三、种子包衣剂的种类(上) 目前国内外所研制的种衣剂类别越来越多,应用范围也越来越广。按不同类型可分为以下几种: 1、按所含活性成分的性质可分为4类:即物理型、化学型、生物型和特异型。物理型又称泥浆型,主要用于小粒种子丸粒化。化学型又叫药 Third, the type of seed coating (on) At present, the type of seed coating developed at home and abroad more and more applications are also more and more widely. According to different types can be divided into the following categories: 1, according to the nature of the active ingredients can be divided into four categories: the physical type, chemical type, biological type and specific type. Physical type, also known as mud-type, mainly used for pellet seed granulation. Chemical type is also called medicine