稻纵卷叶螟是平果县水稻主要害虫之一。从七十年代起,随着耕作制度改变,水稻品种的更换,施肥水平的提高,稻纵卷叶螟的发生也随之发生变化。由于稻纵卷叶螟具有远距离迁飞,又能在本地繁殖越冬,过去在测报技术上很难掌握,造成了不必要的损失。根据多年的田间观察、调查结果,初步掌握了它的发生规律。从1983年至1988年间 Rice leaf roller is one of the main rice pests in Pingguo County. Since the seventies, with the change of farming system, the replacement of rice varieties and the improvement of fertilization levels, the occurrence of rice leaf roller has also changed. As the rice leaf roller Cnaphalocrocis medinalis has long-distance migration, but also in the local propagation of winter, in the past in the measurement of technical difficult to grasp, resulting in unnecessary losses. According to years of field observations, the survey results, initially mastered its occurrence. From 1983 to 1988