今年2、3月间,海南岛陵水县及崖县各兄弟省、市、区的南繁杂优水稻制种田上相继发生急性枯萎型叶枯病(以下简称叶枯病)。由于发病面广,发生急激,症状严重,因而引起了大家高度的重视,究竟是白叶枯病还是一种新的水稻病害,南繁队和群众纷纷来信及送来检验材料,要求尽快澄清这一问题。 In February and March this year, acute wilt-type leaf blight (hereinafter referred to as leaf blight) successively occurred on the south of Fanzaowanzaowei farming in the provinces, cities and districts of Lingshui County and Hainan Province. As a result of a wide range of incidence, acute irritation, severe symptoms, which attracted great attention, whether it is a bacterial blight or a new disease, the Southern brigade and the masses have letters and sent the test materials, as soon as clarified this A question.