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锯齿叶矮缩病(Ragged Stunt)是我国水稻上初次发现的一种新的病毒病。此病自1978年在福建沙县发生以来,现已扩及顺昌、建阳、浦城、龙海、诏安等地。接种病株可先后出现明显的症状特征:卷叶、叶缘缺刻、脉肿和节枝。反复试验证明,此病只能由褐飞虱(Nilaparvata lugens)传播,传毒率为2.6—42.1％;能终身传毒。灰飞虱(Laodelphax striatella)、白背飞虱(Sogata furcifera)和黑尾叶蝉(Nephotettix cincticeps)以及病株汁液、病土、病根和病种子均不传病。病害可与矮缩(dwarf)、簇矮(bunchy stunt)、暂黄(transitory yellowjng)、黄萎(yellow dwarf)发生二重、
Ragged Stunt is a new virus disease discovered for the first time on rice in our country. Since the disease occurred in Shaxian County, Fujian Province in 1978, it has been extended to Shunchang, Jianyang, Pucheng, Longhai and Zhaoan. Inoculated diseased plants may have obvious symptoms: curly leaves, leaf margin nicks, meibomines and branches. Repeated tests show that the disease can only be transmitted by Nilaparvata lugens, the virus transmission rate of 2.6-42.1%; can be lifelong poisoning. Laodelphax striatella, Sogata furcifera and Nephotettix cincticeps, as well as diseased plant juices, disease-free soil, diseased roots and diseased seeds. Diseases can be dwarf, bunchy stunt, transitory yellowjng, yellow dwarf double,