近几年,我县甜椒根腐病发病率逐年上升,严重地块已达90%,减产在70%以上,个别地块甚至绝收。这种病多发生于幼苗定植后,发病高峰在挂果后。起初病株白天枝叶萎蔫,傍晚至次晨恢复,反复多日后整株枯死。病株根茎部及其皮层呈淡褐色至深揭色,极易剥离,露出暗色的木质部。据观察分析,该病发生的原因:一是夏季降雨量大或大水漫灌,形成土壤过湿,透气性差,促使 In recent years, the incidence of sweet pepper root rot in our county increased year by year, a serious block has reached 90%, cut more than 70%, even a few individual blocks. This disease occurs in seedling colonization, the peak incidence in the fruiting. At first, the diseased plants wilted during the daytime, and recovered in the evening and next morning, and the whole plant died after repeated days. Roots and diseased rhizomes and their cortex was light brown to reveal the color, easy to peel, revealing dark-colored xylem. According to observation and analysis, the reasons for the disease: First, summer rainfall or flood irrigation, the formation of soil over-wet, poor ventilation, prompting