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本文就近几年对褐飞虱发生情况的观察,试作发生规律方面的探讨。 一、发生世代 通过田间系统观察,褐飞虱在我县常年
In this paper, the occurrence of brown planthopper in recent years, the observation of the occurrence of trials on the law. First, the occurrence of generations through the field system observation, brown planthopper perennial in our county