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水稻普通矮缩病的虫媒传染 1.各地产叶蝉媒介能力的差异在供试虫采集地中,普矮发病以干叶县丸山町最重,小田原市下府中次之,宇都宫市峰町较轻,足利市寺冈和东京都练马区谷原町未发病,山形市完全不发病。把上述各地采集的虫,以个体经过2代调查是否带毒,从被吸汁稻苗不发病的虫子小群中,取出若干头虫,将相同采集地的一群虫集中饲养在同一养虫笼中,取其子代供试。山形市和东
Common insect dwarf disease of rice vector 1. Differences in the ability to produce leafhoppers around the media in the collection of test insects, Pu short incidence of stems and leftover Maruyama Maruyama-cho, Odawara-shi next Fuchu, Utsunomiya City peak Minato-cho is light, and Teraoka, Ashikaga-shi, and Tanawara-machi, Nerima-ku, Tokyo are not affected, and Yamagata does not have any disease at all. The insects collected in the above-mentioned places were investigated for whether they were poisoned by two generations of individuals, and several cephalopods were taken out from a small group of insects which were not infected with rice seedlings, and a group of insects collected from the same place were collected and kept in the same rearing cage , Take their children for the test. Yamagata City and east