山东省植保总站依据一年来独特的气候条件,玉米品种间的感病差异,及对越冬虫源的调查分析,现对玉米病虫草害预报如下:预计今年玉米病虫草害将中等发生。其中,一代玉米螟偏重发生;叶斑病、二、三代玉米螟、玉米穗虫、玉米草害中等发生;粗缩病和杂草有加重为害的趋势;玉米丝黑穗病、苗枯病某些品种发病较重。其原因一是冬季气温高,有利于多种病虫越冬,今春4-5月份降雨较多,有利于灰飞虱发生和传播粗缩病病毒, Shandong Provincial Plant Protection Station based on the unique climatic conditions of the past year, the difference between the susceptible varieties of maize and the investigation and analysis of the overwintering insect pests, we now forecast the maize pests and weeds as follows: It is estimated that maize pests and diseases will occur moderately this year. Among them, the first generation of corn borer stress occurred; leaf spot, the second and third generation of corn borer, corn earworm, corn grass occurred moderately; curtilage and weeds are aggravating the trend; maize head smut, The incidence of these varieties heavier. The reason is the high temperature in winter is conducive to a variety of pests and winters, more rain this spring 4-5 month, is conducive to the occurrence and spread of SBPH bugs virus,