论文部分内容阅读
5月上旬,四川省农业厅组织该省植物保护专家委员会相关专家对2017年大春作物主要病虫害发生趋势进行了会商分析。根据全省大春作物品种布局、当前病虫基数以及未来气候趋势,结合历年病虫发生情况等因素综合分析,预计2017年全省大春作物病虫害总体偏重发生。其中水稻病虫害偏重发生(4级),发生面积6500万亩次;玉米病虫害中等发生,局部偏重(3(4)级),
In early May, Sichuan Provincial Department of Agriculture organized relevant experts of the plant protection expert committee of the province to conduct consultation on the trend of the main pests and diseases in the spring crop of 2017. According to the province's spring crop varieties layout, the current base number of pests and diseases and future climate trends, combined with the pest and disease over the years and other factors comprehensive analysis of the factors is expected in 2017 the province spring crop pests and diseases in general occurred. Among them, pests and diseases of rice occurred preferentially (Grade 4), with an area of 65 million mu; maize diseases and pests occurred moderately and partially (3 (4)),