【摘要】 作者应用相关分析、多元回归和逐步回归等方法,统计分析了1959年以来黑龙江省八五四农场设置的病圃所积累的23年的田间赤霉病病情资料与各种气象因子的关系。明确了当地小麦赤霉病流行强度变化主要受小麦抽穗扬花期的平均相对湿度、降雨日数、日照时数3项气象因子所左右。据此建立了小麦赤霉病流行预测模型,模型的回检及实测检验结果表明,该模型较准确地反映了当地小麦赤霉病的流行规律,可用于赤霉病流行强度的预测。更多还原

【Abstract】 This paper presents investigation data of field epidemic states of spring wheat scab accumulated since 1959 from a disease nursery, in Farm No. 854 of Heilongjiang Province. The statistical analysis illustrated that the wheat scab epidemic strength was determined by average relative humidity and days of raining and the duration of sunshine from wheat ear sprouing phase to blooming phase in the region. Based on these main factors setting up wheat scab epidemic forecast models were set up and applied to practice. The results of application indicated that these models could precisely report wheat scab epidemics in the area and forecast wheat scab epidemic strength.更多还原