水稻齿矮病,又称水稻锯齿叶矮缩病,是一种水稻病毒病。在东南亚国家,该病危害性很大,严重的病株率可达90％以上。在我国,我们于一九七八年在福建沙县首次发现,现已扩及顺昌、建阳、浦城、龙海、诏安等县,多属零星发生,个别病重的田区,稻株发病率达10％以上,对一些水稻当家品种和杂优组合都能感病。这对当前水稻生产是一个新的潜在威胁。现将我们发现和研究鉴定的结果作扼要的报道。一、发现经过:我们于一九七八年十月,在沙县洋坊的四优2号杂交水稻田上看到一种症状颇似簇矮病(即类普矮病)的病株,但又有叶尖扭曲、旋卷的特殊症状,即疑为 Rice tooth dwarf disease, also known as rice saw leaf dwarf disease, is a rice virus disease. In Southeast Asian countries, the disease is very dangerous and the serious disease rate can reach more than 90%. In our country, we found for the first time in Shaxian County, Fujian Province in 1978 and have now been extended to Shunchang, Jianyang, Pucheng, Longhai and Zhaoan counties. The incidence of more than 10%, for some varieties of rice and hybrid combinations can feel sick. This is a new potential threat to current rice production. Now we find the results of research and research for a brief report. I. Discovery After: In October 1978, we saw a diseased plant that appeared to be cluster-like dwarf disease (ie, Pu-type dwarf disease) in the hybrid rice field at Siyou No.2 in Yangfang, Sha County. However, Apex distortions, the special symptoms of spiral, that is suspected