【摘要】 为明确甘肃省武威地区酿酒葡萄霜霉病发生流行规律,于2017—2018年对生长季节酿酒葡萄霜霉病发生情况进行了系统调查,初步构建了酿酒葡萄霜霉病发生流行的动态模型。结果显示,酿酒葡萄霜霉病的发生流行与生育期、积温、相对湿度有密切关系,且Logistic模型可以很好地模拟武威地区酿酒葡萄霜霉病发生流行情况。经Logistic模型推导,武威地区酿酒葡萄霜霉病指数增长期为7月初至7月底,该时期为最佳药剂防治期;逻辑斯蒂增长期为7月底至9月下旬;衰退期为9月下旬以后。指数增长期积温为0～1 854℃,逻辑斯蒂增长期积温为1 854～3 046.9℃;指数增长期累计相对湿度为0～4 412%,逻辑斯蒂增长期累计相对湿度为4 412%～8 765.6%。更多还原

【Abstract】 In order to determine the occurrence and epidemic of wine grape downy mildew in Wuwei, the occurrence of wine grape downy mildew in growing season was investigated in 2017 and 2018, and a dynamic model of its epidemic processes was established. The results showed that the occurrence and epidemic of wine grape downy mildew were closely related to growth period, accumulated temperature, and relative humidity. The Logistic model could well reflect the prevalence of wine grape downy mildew in Wuwei: the exponential phase was predicted from early July to late July in Wuwei, which should be high time for chemical control; the logistic phase was from late July to late September, while the decline phase was from late September to the end of the wine grape growing stage. The accumulated temperature(AT) of exponential phase was 0～1854℃, and the accumulated relative humidity(ARH) was 0～4412%. The AT of the logistic phase was 1854℃～3046.9℃, and the ARH was 4412%～8765.6%.更多还原