摘要： 报道了谷子纹枯病的侵染规律及春、夏谷的田间发生规律。病菌接种后14d就可以侵入茎秆,其病害扩展速度与温湿度呈显著正相关。当旬平均气温在243℃,降雨量在80mm以上,相对湿度在80%以上时,纹枯病垂直向上侵染叶片的速度可达056片/日,为全生育期侵染高峰期。谷子播种期与发病关系密切,早播病重迟播病轻。

关键词: 谷子, 纹枯病, 发生规律, 影响因素

Abstract: T his paper reported the invasive rules of R hiz octonia solani in foxtail millet and the developingrules in f ieldvalue The pathogen would invade the stem after 14 days of inoculationvalueIt show ed some high posit ivecorrelation among invasive speed of Rhiz octonia solani,the air temperature and humidity on fox tail milletvalue Thedaily average invasive speed f rom the basic part to the top of the stem was 0value56 leaves when the average tempervalueature was 24value3 value,the rainfall above 80 mm and the ralat ive humidity over 80%,which was the invasive peakperiod of Rhi zoctonia solani during the w hole grow ing seasonvalue The incidence of Rhiz octonia solani was closelyrelated to the date of plant ingvalueEarlier sow ing resulted in more serious disease than late sow ingvalue

Key words: Foxtail millet, Rhi zoctonia solani, Invasive rules, Effect factors

中图分类号: 

• S435.15