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      黄瓜霜霉病发生特点
      日期:2016-05-19作者:来源:内蒙古农牧业信息网点击:

        在病叶上越冬,通过气流、雨水、昆虫传播,温暖潮湿的环境利于发病,在20至24摄氏度,相对湿度93至100%时适于流行。多雨、多露、多雾和昼夜温差大、阴雨天和晴天交替的天气条件下,病害蔓延迅速。

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