用积温法则预测昆虫的发生期是最基本的方法。活动温度的总和谓之活动积温,文献上常用K=NT表示。活动积温是由若干个不相同的活动温度相加求得的和,再把温度值平方后具有加权意义和应用常年候平均气温才有时效意义,将这两点考虑进 Prediction of the occurrence of insects using the law of accumulated temperature is the most basic method. Activities of the sum of temperature that activity accumulated temperature, the literature commonly used K = NT said. Activity accumulated temperature by a number of different activities and the sum of temperature, and then the temperature value after the square of the weighted mean and the application of perennial average temperature has the significance of aging, these two points into account