论文部分内容阅读
油菜龙头病是油菜生产上的重要病害,它主要由白锈病菌和霜霉病菌引起的。去冬今春我站会同张江、凌桥等公社,进行了油菜自锈病菌特性、大田发病规律和防治方法的观察,现将初步结果整理如下。一、病菌特性的观察 1.白锈病病菌潜育期:77年12月22日至78年1月25日,在温室内进行观察。取长势健壮5叶期油菜20盆,将有病秧苗上的新病斑孢子堆刮下,盛在培养皿中,加蒸馏
Rape leading disease is an important disease in rape production, which is mainly caused by white rust and downy mildew. To winter and spring I stood with Zhangjiang, Lingqiao and other communes, conducted a rape rust characteristics, field incidence rules and prevention methods of observation, the preliminary results are summarized below. First, the observation of the characteristics of bacteria 1. White rust disease latent period: December 22, 77 to January 25, 78, in the greenhouse for observation. To take a robust 5-leaf stage rape 20 pots, the diseased seedlings on the new disease spot spore pile scraped, Sheng Petri dish, add distillation