稻纵卷叶螟(Cnaphalocrocis medinalis Guenée)原在我县稻区偶有发生,六十年代逐年上升,七十年代大量发生,现已成为水稻主要害虫之一。为此,测报工作者们正在从不同途径探索回归预测式。 笔者用本县病虫测报站15年积累的资料,对稻纵卷叶螟一代幼虫与二代蛾量的关系进行统计分析,得出一个回归预测式,现提出供参考。 The original Cnaphalocrocis medinalis Guenée occurred occasionally in the rice-growing area of ​​our county. It increased year by year in the 1960s and occurred in large quantities in the seventies. It has become one of the major pests in rice. To this end, survey workers are exploring ways to return to predictive. The author uses the data accumulated in this county pest forecasting station for 15 years to make a statistical analysis of the relationship between the first generation larvae of the rice leaf roller and the second generation moth, and draw a regression prediction formula, which is presented for reference.