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本文报道水稻簇矮病的地理分布,经济损失、寄主范围和越冬途径。水稻簇矮病主要分布在闽西北和闽南的28个县市;赣、湘、粤的部分县市也有零星发生。其中以闽南的云霄、漳浦比较严重。病害损失与感染、发病的稻龄有关,在田间以返青、分蘖期发病的损失最大;人工接种证明,三叶期和分蘖期感染的均不会抽穗、结实。采用人工接种和血清学方法测定了水稻等18种禾本科植物,只有水稻是该病的寄主。病害主要以带毒的黑尾叶蝉(Nepho-tettix cincticeps)和二点黑尾叶蝉(N.virescens)越冬,此外,有时也能在再生稻病株上越冬。
This paper reports the geographical distribution, economic loss, host range and overwintering pathways of rice cluster dwarfism. Rice cluster dwarf disease is mainly distributed in 28 counties and cities in northwestern Fujian and southern Fujian; some counties and cities in Jiangxi, Hunan and Guangdong also sporadically occur. Among them, the sky in southern Fujian, Zhangpu more serious. The loss of the disease was related to the infection and the onset of the rice age. The loss of the disease was most frequent in the field with turning green and tillering stage. The artificial inoculation showed that neither the three-leaf stage nor the tillering stage infected the plants with heading and fruiting bodies. 18 species of gramineous plants such as rice were determined by artificial inoculation and serological methods. Only rice was the host of the disease. Diseases mainly winters with the poisoned Nepho-tettix cincticeps and N. virescens, and in some cases overwinter on the ratoon rice plants.