皖北玉米瘤黑粉病的发生与防治

Occurrence and Control of Ustilago maydis(DC.)Corda in Northern Anhui Province

近年来,受气候变化、品种多样化、秸秆还田、病原菌积累、栽培管理粗放等因素的影响,皖北地区玉米瘤黑粉病有逐渐上升的趋势,严重影响玉米生产,造成了一定的经济损失。本文对皖北玉米瘤黑粉病发生情况、病菌来源、病害症状、传播途径、发病条件等方面进行了阐述,并提出了主要的防治方法。

In recent years, with the influence of climate change, variety diversification, straw returning, accumulation of pathogens, extensive cultivation and management ,there is a gradual increase of Ustilago maydis （DC.）Corda in northern Anhui ,which seriously affected maize production and caused some economic losses.The pathogenesis, pathogen source, disease symptoms ,ways of transmission and morbid condition of Ustilago maydis （DC.） Corda in northern Anhui were expounded, and the main control methods were put forward.