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为了探讨水稻生育后期遇台风大雨后,导致白叶枯病重复侵染年份的药剂防治策略,1981-1982年开展了以下试验工作。一、试验方法(一)大田病情普查 1982年9月1-2日受十四号台风影响,我县有九万三千余亩中晚稻发生了白叶枯病。病情稳定后,10月21日在新塘公社的老病区,对24丘成片连晚农虎六号进行了逐丘考查,所得数据通过数理统计,求其发病相关性。(二)人工盆栽接种 1982年7-10月,对原丰早(籼稻)、农虎六号(粳稻)、双糯四号(糯稻),汕优六号(杂交稻)等四个品种,进行了36期共72盆人工剪叶接种。每一品种从幼穗分化
In order to explore the chemical control strategy of the year of repeated rice infested by typhoon during the late growth stage of rice after 1981, the following experiment was carried out. First, test methods (a) census of Daejeon 1-2 September 1982 Affected by typhoon No. 14, my county has more than 93,000 acres of late blight occurred in rice. After the condition was stabilized, on Oct. 21 in the old ward of Xintang commune, twenty-four mound-and-late-night tigers were investigated on a daily basis. The data obtained were analyzed by mathematical statistics to find the incidence-relatedness. (B) Artificial potted inoculation From July to October, 1982, four varieties including original abundance of early indica rice, Nonghu No.6 (japonica rice), double waxy rice No.4 (glutinous rice) and Shanyou No.6 (hybrid rice) A total of 72 period of 36 artificial leaf pruning. Differentiation of each cultivar from panicle