水稻黄矮病由于在症状上易与虫伤、肥害、药害、生理性赤枯病相混淆,常不易识别,而采用虫传试验鉴定则费时很长。近年我们采用碘液染色法进行鉴定,结果证明这是一种快速、简便的方法。 植物感染黄化类型的病毒病以后,叶部淀粉运转缓慢,因而在叶部维管束处附近有淀粉累积现象。? Rice yellow dwarf disease is easily identified with insect pests, fertilizers, phytotoxicity and physiological brown blight because of its obvious symptoms. However, it is very time-consuming to identify using insect-borne tests. In recent years, we use iodine staining method for identification, the results prove that this is a quick and easy way. After the plant is infected with the yellow type virus disease, the leaf starch runs slowly and thus accumulates starch around the vascular bundle in the leaf. ?