根据病害发生发展规律和病害流行条件,结合当时当地的气象因素、寄主生长发育状况及病害历年流行的历史资料,预测某种病害流行的时间及可能造成的危害,这叫病害流行的预测;根据预测资料发出通报,使有关地区和单位做好防治工作的准备,这叫预报。 According to the occurrence and development of disease and disease epidemic conditions, combined with the prevailing local meteorological factors, the host growth and development of disease history and prevalence of perennial epidemic of historical data to predict the prevalence of a disease and possible harm caused by the epidemic, called the epidemic prediction; based on Forecast information issued a circular so that the relevant regions and units to prepare for prevention and control work, called forecast.