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广东新发生的水稻瘤矮病于1981～1982年在广东湛江地区的信宜、高州和化州县发生流行。室内用叶蝉接种2叶龄的稻苗,在10～11月广州温室温度约为土9～23℃下,潜育期为13～28天,主要症状为病苗矮缩,叶片浓绿色,叶背及叶鞘上长有若干个淡黄绿色近圆形小瘤(0.1～1.2毫米直径)。病毒粒子球状,直径约60毫微米。昆虫介体为电光叶蝉(Recilia dorsalis Motsch.)和黑尾叶蝉(Nephotettix cinticeps Uhler.)。褐稻虱(Nilaparvata lugens Stal.)和白背飞虱(Sagatella furcifera Horvath.)不能传病。二点黑尾叶蝉(N.virescence Distant.)和大斑黑尾叶蝉(N.apicalis Motsch)还有待进一步研究决定。电光叶蝉的最短获毒饲育期少于24小时。潜育期在平均室温22～23℃下为13～24天。保毒虫能终生传毒。根据上述实验结果,初步认为本病与泰国和马来西亚报道的水稻瘤矮病相同。
The new occurrence of GDD in Guangdong occurred between 1981 and 1982 in Xinyi, Gaozhou and Huazhou counties in Zhanjiang, Guangdong. Indoor leafhopper inoculation 2 -year-old rice seedlings in Guangzhou from October to November temperature of about 9 ~ 23 ℃ soil temperature, the incubation period of 13 to 28 days, the main symptoms of dwarf disease, leaf thick green, Leaf dorsal and sheath length of a number of yellowish green nearly round nodules (0.1 ~ 1.2 mm diameter). The virus particles are spherical and about 60 nanometers in diameter. Insect mediators are Recilia dorsalis Motsch. And Nephotettix cinticeps Uhler. Nilaparvata lugens Stal. And Sagatella furcifera Horvath. N. virescence Distant. And N. apicalis Motsch remain to be further studied. Light leafhopper get the shortest toxic feeding period of less than 24 hours. The incubation period is 13-24 days at an average room temperature of 22-23 ° C. Poisons can be life-long poisoning. Based on the above experimental results, this disease was initially considered to be the same as the reported rice dwarf disease in Thailand and Malaysia.