中文摘要：水稻条纹病是水稻条纹病毒（RSV）引起的水稻上重要的一种经济性病害，由灰飞虱（SBPH）传播。由于这种病害使日本水稻近期遭受的损害急剧增长，迫切需要尽快制定控制方法。为了获得开发这些方法的基础数据，作者研究了这种病害如何在稻田中造成损害和传播。调查显示，病株首先出现在6月中旬至7月初，随后病害从已感染的植株蔓延到邻近的植株。这表明，携带RSV的SBPH进入稻田后会在移动时感染它们所接触到的植株并产卵。随后，孵化的带毒若虫感染周围的植物，从而传播病害。本研究对水稻条纹病造成的损害分析表明，病害发生越早，所造成的损害就越广泛，并且该病害通过健穗数量的减少来降低产量。这表明，为了降低由这种病害引起的损害，有必要在作物生长初期控制介体昆虫，以确保足够数量健穗的生长。为了最有效地控制害虫，应努力以一代成虫或二代若虫和成虫（会引起田间病株数量快速增加）为害虫防治目标。
外文摘要：Rice stripe disease is an economically important disease of rice caused by the Rice stripe virus (RSV), which is transferred by the small brown planthopper (SBPH). The recent rapid increase in damage to rice crops throughout Japan caused by this disease makes it imperative to develop control methods as soon as possible. To obtain basic data for developing such methods, we studied how the disease causes damage and spreads within paddy fields. Our investigations revealed that diseased plants first appear in mid-June to early July, after which the disease spreads from affected plants to adjacent plants. This suggests that SBPH carrying RSV enter paddy fields, where they infect plants as they move about and lay eggs. Subsequently, hatched viruliferous nymphs infect surrounding plants, thereby spreading the disease. Our analysis of the damage caused by rice stripe disease showed that the earlier the onset of disease, the more extensive the damage caused, and that the disease reduces yield by reducing the number of healthy panicles. This suggests that to reduce damage caused by this disease, it is necessary to ensure the growth of a sufficient number of healthy panicles by controlling the vector insect during the crop's early growth period. To be most effective, pest control efforts should be timed to target either the first-generation adults that colonize the paddy fields or the second-generation nymphs and adults that cause the rapid increase in the number of diseased plants within a field.
外文关键词：Damage analysis; Rice; Rice stripe disease; Small brown planthopper; Yield loss
作者：Shiba, Takuya; Hirae, Masahiro; Hayano-Saito, Yuriko; 等
作者单位：National Agriculture & Food Research Organization - Japan
期刊名称：FIELD CROPS RESEARCH
期刊影响因子：3.048
出版年份：2018
出版刊次：3
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