论文部分内容阅读
一、发生与危害情况:小麦霜霉病,我县于1973年开始在梧凤公社的小店大队、龙江公社的龙江、柏花、张山、谭堰大队及新沟桥公社等地发生,零星发病面积约1141亩。开头病原不清,只是根据病状及1972年稻叶蝉在冬麦田间虫量大等表面现象,误认为是“小麦病毒病”的一种类型——丛矮病。以后各地曾提出不同看法,因小麦抽穗后,在全县各地均出现类似零星病株,经显微镜检查,发现麦叶组织中有霜霉病菌的卵孢子。今年,经有关单
First, the occurrence and damage: wheat downy mildew, my county in 1973 started in Wufeng commune shop brigade, Longjiang commune Longjiang, Baihua, Zhang Shan, Tan weir brigade and the new ditch bridge commune and other places Occurred, sporadic disease area of about 1141 acres. The beginning of the pathogen is unclear, but according to the symptoms and the 1972 rice leafhopper in the winter wheat field and other large surface phenomena, mistaken for the “type of wheat virus disease ” - dwarf disease. After various places have put forward different views, due to wheat heading, the emergence of similar sporadic strains throughout the county, the microscopic examination found that there is downy mildew in wheat leaf tissue oospores. This year, the relevant single