论文部分内容阅读
据以往报道,水稻“紫鞘病”(暂称)在南方广大稻区发生甚为普遍。吉安地区自七十年代以来有零星发生,近年病情发展很快,给水稻高产造成一定损失,已逐渐引起人们的重视。“紫鞘病”病原问题国内外尚未有详细研究和确切认识,1975、1976年、广东、广西曾先后报道认为是某种螨类为害所致;1979年江苏镇江地区农科所研究结果则认为是Acrocylindrium oryzae Saw ada(即叶鞘腐败病菌)所引起。1980～1981我所就此病的发生、品种抗病性及损失率作了一些初步调查工作,现报道如下:
According to reports in the past, the rice “purple sheath disease” (tentative name) occurred in the vast rice area in the south is very common. Ji’an area has sporadic occurrence since the seventies. In recent years, its condition has developed rapidly, causing some losses to the high yield of rice. It has gradually drawn people’s attention. “Purple sheath disease” pathogen problem at home and abroad have not yet been studied in detail and the exact understanding of 1975, 1976, Guangdong, Guangxi has reported that it was caused by a certain type of mites; in Zhenjiang, Jiangsu Province in 1979 the results of the study that Is caused by Acrocylindrium oryzae Saw ada (leaf sheath spoilage bacteria). 1980 ~ 1981 I made some preliminary investigations on the occurrence of disease, disease resistance and loss rate of varieties, and are reported as follows: