研究者发现凡用糖水或糖蜜水喷过的棉行都集聚有棉龄虫的成虫,并发现这种喷糖的棉行对于害虫盛发高峰的测定和大发生的预测预报都是有用的。在某些杀虫药剂内加入糖蜜可使幼虫的死亡率提高15%,并可使药刺对成虫的有效防治期延长两周。使用所谓“越级喷雾”处理法曾取 The researchers found that cotton swabs sprayed with either sugar or molasses boiled adults of cotton-age insects and found that such sugar-swabs were useful for the determination of pests and the prediction of large occurrences. Addition of molasses to certain insecticides increases the larvae mortality by 15% and prolongs the effective control of adults by adults. The so-called “leapfrog” treatment was taken