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通过研究得到了豫东平原地区泡桐蓄叶量（Ｙ） 与胸径（Ｄ） 之间的回归关系式：Ｙ＝５６９－９３２３Ｄ２－２９４５ 。根据泡桐叶甲的发生发展规律、生活习性和泡桐蓄叶量与胸径的相关关系，得出越冬出蛰成虫的防治指标（Ｅ） 理论计算公式为Ｅ＝ ０－１４７８Ｄ２－２９４５ ，并据此确定了生产中的实际应用防治指标，对生产实践具有指导意义。
The regression equation between leaf volume (Y) and diameter at breast height (DB) was obtained from the study in the plain area of East Henan: Y = 569-9323D2-2945. According to the occurrence and development of paulownia leafhopper, the living habits and the relationship between leaf volume and DBH, the control index (E) of the overwintering larvae was obtained. The theoretical calculation formula was E = 0-1478D2-2945, and was determined accordingly The production of practical application of prevention and control indicators, the production practice has guiding significance.