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鲁北地区近年来已成为苹果主产区之一 ,随着生产的发展、栽培管理和病虫害防治技术的提高 ,致使苹果病虫害种群结构发生了变化 ,一些多年来重点防治对象基本得到控制 ,而原先的一些次生性病虫上升为主要防治对象。80年代以前 ,管理差的苹果园主要害虫是植食螨、蚜虫、顶梢卷叶
Lubei area has become one of the main producing areas of apple in recent years. With the development of production, cultivation management and improvement of pest and disease control technology, the structure of apple pest and disease has changed. Some of the key prevention and control targets have been basically controlled over the years, Some secondary pests and diseases rose as the main control object. Before the 1980s, poorly managed apple orchard main pests are phytophagous mites, aphids, top-leaf roll