小麦不同播期纹枯病发生规律的研究

Study on the Occurrence of Wheat Sharp Eyespot in the Fields with Different Sowing Time

对豫麦34、徐州26、扬麦10、宁麦9、皖麦38、徐州25等6个小麦品种不同播期纹枯病病情指数进行分析,发现除豫麦34、徐州26外,其他品种不同播期对纹枯病的影响差异显著,扬麦10、宁麦9、皖麦38等品种10月5日与10月25日差异极显著.早播加重纹枯病病情,适期迟播可减轻病害的发生.

It was found that the sowing time played a significant role in the occurrence of sharp eyespot on the wheat varieties except Yumai34 and Xuzhou26 after the analysis of the disease index on Yumai34,Xuzhou26,Yangmai10,Ningmai9,Wanmai38 and Xuzhou25 which were sowed in different time. Moreover, the disease index was very significantly different between the sowing time of October 5 and that of October 25 on Yangmai10, Ningmai9 and Wanmai38.The disease was serious in the early sowing fields,whereas it declined in the later sowing fields.