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近年来,随着免耕播种夏玉米和玉米秸秆还田等新的耕作栽培技术的大面积推广和品种的更换,玉米主要病虫害种类和危害发生了明显的变化。如玉米大斑病、玉米小斑病等一些重要病害发生减轻:一些次要病虫害上升为主要病虫害。了解玉米生产中主要病虫害的发生特点,掌握病虫害田间鉴别的基本要领,有针对性地采用科学的防治技术,将会有效减轻和控制病虫害对玉米生产的威胁,保障玉米生产的稳产高产。
In recent years, with no-tillage sowing of summer maize and corn stalks and other new cultivation techniques of large-scale promotion and replacement of varieties, maize pests and diseases of the main types and hazards have undergone significant changes. Some important diseases such as maize leaf spot and maize spot lesion are alleviated: some minor diseases and pests rise as the main pests and diseases. Understanding the occurrence characteristics of major pests and diseases in maize production, grasping the basic essentials of field identification of pests and diseases, and adopting targeted prevention and control technologies in a targeted manner will effectively reduce and control the threat posed by pests and diseases to corn production and ensure the stable and high yield of corn production.