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近几年来,小麦纹枯病的发生危害逐年上升,1987年已成为我市小麦的一种主要病害。全市发病面积55.45万亩,占小麦总面积的57.2%。据5月11日调查,小麦纹枯病病株率69～100%,平均93.2%,病指34.7～65.5,平均46.9;白穗率1～28%,平均3.73%。损失小麦达600万公斤。为了探讨适宜的防治对策,我们于1988年结合田间调查研究,对小麦纹枯病的发生与防治进行了初步观察;结果如下。
In recent years, the occurrence of wheat sheath blight hazards increased year by year, 1987 has become a major disease of wheat in our city. The city’s area of 55.45 million mu of disease, accounting for 57.2% of the total area of wheat. According to a survey conducted on May 11, the incidence of wheat sheath blight was 69-100% with an average of 93.2%. The disease index was 34.7-65.5 with an average of 46.9%. The white spike rate was 1-28% with an average of 3.73%. Lost 6 million kilograms of wheat. In order to explore the appropriate countermeasures for prevention and control, we conducted a preliminary observation on the occurrence and control of wheat sheath blight in 1988 with the field investigation and research; the results are as follows.