病虫害预测预报,就是根据当地当年影响病虫发生发展的诸因子,通过诱集、室内饲养及按历年发生期进行田间调查,将所得结果进行一系列统计分析,预测出当地各主要病虫的发生期及发育发展进度,从而指导大田适时防治,减免经济损失.在病虫发生期预测中,常将某一病虫发生期分为始见期、始盛期、高峰期、盛末期、终见期,着重预报始盛、高峰、盛末三个时期.病虫发生期预测方法有下列五种: According to the local factors influencing the occurrence and development of pests and diseases in the current year, the forecast of pests and diseases is based on a series of statistical analysis of the results obtained through trapping, indoor feeding and field surveys over the years to predict the occurrence of major pests in the local area Period and the development of the development progress, so as to guide the timely prevention and control of the field, economic loss.Before the prediction of pests and diseases, the pest occurrence period is often divided into the initial period, the beginning of the peak, the peak, the end, the final Period, focusing on the beginning of Shing, peak, peak Sheng three periods. Prediction of pests and diseases in the following five ways: