水稻细菌性褐条病的发生与室内药剂筛选初报

A Preliminary Study on Occurrence of Rice Bacterial Brown Streak and Screening of Chemicals for Controlling It in Lab

水稻细菌性褐条病是北方寒地稻区的新记录病害,在水稻育秧期发生。其主要症状是在幼苗的第1叶片上产生黑褐色长条斑;或第2、3叶片的叶鞘变褐,叶片主脉基部或全部呈褐色条状;或在虫伤等处产生不规则条斑。病部未见菌脓。药剂筛选结果是45%福酮可湿性粉剂、1.5%噻霉酮水剂、45%代森铵水剂对病原细菌有直接抑制作用。

Rice bacterial brown streak, which occurred at seedling stage and caused by Pseudomonas panici Stapp, is a new type of rice diseases discovered in the north of China. There were three types of symptom, including black brown streak in the first leaf, leaf sheath went yellow brown and midrib brown streak or irregular streak on the wound by insect. There was not bacterial ooze in the diseased position. The results of screening of chemicals in lab showed that the growth of Pseudomonas panici Stapp was obviously inhibited by using triadimefon＋thiran, benziothiazolinone and amobam.