根据当前水稻主要病虫发生动态,结合历史资料、气候条件等因素分析,预计广西区晚稻中后期主要病虫鼠的发生程度为4(5)级,比上年略重。与上年同期相比,三化螟、稻瘟病发生持平,稻飞虱、稻纵卷叶螟、稻纹枯病发生偏重。三化螟第四代发生程度将达2(3)级。重发区域在桂中、桂东的大部及桂西南、右江河谷的部分稻区。全区发生面积 According to the current dynamics of major diseases and pests in rice, combining historical data, climatic conditions and other factors, it is estimated that the incidence of major pests in late rice in Guangxi region is 4 (5) grade, slightly heavier than the previous year. Compared with the same period of the previous year, the incidence of rice blast borer, rice blast, rice planthopper, rice leaf roller, rice sheath blight biased. Third generation borer fourth generation will reach 2 (3) level. Redistribution areas in Guangxi, Guangxi and most of the eastern part of Guangxi, Youjiang River Valley part of the rice area. Area occurred in the region