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在观测调查的基础上,用耦合法分析了影响病害流行程度的因素。结果表明,收获前平均病穗率(病指)与4～5月上旬(4月)平均相对湿度、4～5月上旬平均气温、子囊壳成熟高峰期至小麦齐穗期期距有关。用期距衡量子囊孢子释放期与穗期(抽穗—灌浆期)的吻合程度,流行程度由吻合程度、穗期气象条件等因素决定,开展定量预测应用研究,提高预测防控水平。
Based on the observation and investigation, coupled factors were used to analyze the factors affecting the prevalence of the disease. The results showed that the average disease rate before harvest (disease index) was correlated with the average relative humidity in April ~ May (April), the average temperature in early April ~ May, the mature peak of the shell of Cysts and the heading stage of wheat. The duration of ascospore release and spike stage (heading-filling stage) was measured by staging. The epidemic degree was determined by the degree of coincidence and the climatic conditions at the heading stage. Quantitative prediction application research was conducted to improve the prediction and control of the disease.