近年来我们对美国白蛾进行了测报试验,现初步总结报道如下。一、发生期预测美国白蛾生活史及各虫态历期均已弄清,只要对越冬代成虫发生期进行准确的预报,以后各虫期均能根据其生活史来进行预报。所以几年来我们着重研究越冬代成虫发生期的预测,采用了诱集法、物候法和有效积温法。具体做法是: In recent years, we tested the American white moth test, are now summarized as follows. First, the occurrence of the forecast American White moth life history and the worm period have been clarified, as long as the overwintering generation of the occurrence of accurate prediction, after each period can be based on their life history to predict. Therefore, in recent years, we focused on the prediction of the occurrence of overwintering adult worms, using the trapping method, phenology method and effective temperature method. The specific approach is: