农产品加工研究已成为与人民生活需求密切相关的重点研究项目。它对试材形态结构观察有独特的要求 ,既要求低放大倍数材料的结构组份观察 ,又要高倍数的细胞形态的研究。而光学显微镜和透射电子显微镜均不能同时满足二者的要求。本文应用新断面 SEM(扫描电子显微镜 )方法 ,较 Research on processing of agricultural products has become a key research project closely related to people’s life needs. It has special requirements for the observation of the morphological structure of the test material, which not only requires the observation of the structural components of the low-magnification material but also studies of the high-fold cell morphology. Both optical microscopy and transmission electron microscopy can not satisfy both requirements. In this paper, a new section SEM (scanning electron microscopy) method, compared