三峡库区玉米纹枯病发生规律及影响因素研究

Occurrence and Effect Factors of Corn Sheath Blight in Three Gorges Reservoir Area

文章报道了三峡库区玉米纹枯病的发生规律及其影响因素。玉米纹枯病在不同海拔、不同年度、不同病情田块的发生情况存在差异。影响纹枯病发生轻重的因素主要是菌核量、温度、湿度及雨日。此外,地势、播种方式、品种、播种期亦会影响病害的发生程度。

This paper reported the occurrence and effect factors of corn sheath blight in Three Gorges Reservoir area.The occurrence of corn sheath blight was varied with different altitudes,years and plots,as well as different terrains,varieties,sowing methods and sowing times.The main factors affecting corn sheath blight severity were the amount of sclerotia,temperature,humidity and rain days.