论文部分内容阅读
八点灰灯蛾Creatonotus translens(WalKer)是我区南宁、百色、河池三地区部分山区春玉米苗期的重要害虫,是新发现的玉米黑毛虫主要种类,作者于1980年在隆安县布泉公社田间调查时,发现有自然感病的死亡,死亡率10.8%,死亡幼虫多倒挂于石田硬的石壁上.死亡症状全身肿胀液化流出黄褐色液体;在室内饲养中也极易感染发病,死亡症状相同.经中国科学院上海生物化学研究所龚祖勋同志鉴定为核型角体病毒.试验结果表明,1～6龄幼虫均可感染而死亡.1～3龄幼虫接种后第4天开始发病死亡,接种后第7天死亡率达67.5-86.3%,第10天达75.0—90%,5～6龄幼虫于接种后第13天后化蛹前大量死亡,总死亡率93.3%.
Eight-spotted gray moth Creatonotus translens (WalKer) is an important pest of spring maize seedlings in some mountainous areas of Nanning, Baise and Hechi in our district. It is the newly discovered major species of corn black caterpillar. In 1980, During the field investigation, natural-induced death was found, with a mortality rate of 10.8%. Most of the dead larvae hung upside-down on the hard stone wall of Ishida. Symptoms of death were swollen and liquefied with effervescent brown liquid; infections and morbidity were also easily infected indoors The same as the Chinese Academy of Sciences, Shanghai Institute of Biochemistry, Comrade Gong Zuxun identified as a nuclear virus.Experimental results show that 1 to 6 instar larvae can be infected and died .1 ~ 3 instar larvae on the 4th day after the onset of death, vaccination After the seventh day after the death rate of 67.5-86.3%, 75.0-90% on the 10th day, 5th to 6th instar larvae after the first 13 days after pupation pupation, a large number of deaths, the total mortality rate of 93.3%.