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小麦白粉病是沙湾县小麦的一种间隙型病害,流行年份全县小麦减产20%以上.对此病害,以往仅能短期定性预报,故对其防治往往带有盲目性.我们将1974—1983年沙湾县小麦白粉病发生年份的历史资料进行了整理,应用数理统计方法进行定性定量分析,找出了有关因素之间的相关关系,建立了小麦白粉病中期预报回归预测式,解决了中期预报问题.
Wheat powdery mildew is a gap-type disease of wheat in Shawan County, the prevalence of wheat in the county over the past 20 years more than 20% of the disease, in the past only short-term qualitative forecast, so its control often with blindness, The historical data of year of wheat powdery mildew in Shawan County was sorted out in 1983, and the quantitative analysis was done by using the method of mathematical statistics. The correlation between the factors was found out, and the prediction of medium-term forecast of wheat powdery millet was established. Medium term forecast issue.