2000年1月至5月草莓白粉病在宁波市呈现大发生,据抽样调查,2月份大棚草莓株感病率37%,4月份株感病率达100%,造成草莓产量、品质明显下降,部分农户损失惨重。据初步统计,全市因草莓白粉病流行导致直接经济损失近3000万 According to the sample survey, the susceptible rate of strawberries in greenhouse was 37% in February and the susceptible rate in April was 100%, which resulted in the obvious decrease of strawberry yield and quality, Some farmers suffered heavy losses. According to preliminary statistics, the city due to the prevalence of strawberry powdery mildew led to direct economic losses of nearly 30 million