三门峡市位于豫西丘陵山区 ,海拔高度一般为 50 0～ 1 0 0 0ｍ。区内光照充足 ,昼夜温差大 ,适合苹果生长。自 50年代开始经过半个世纪 ,尤其是 80年代的迅猛发展 ,现种植面积已达 770 0 0ｈｍ2 ,成为全国苹果的主要产区之一。但随着苹果种植时间的增长和面积的扩大 ,苹果病虫? Sanmenxia City is located in the hilly area of ​​western Henan, the altitude is generally 50 0 ~ 100m. Sufficient illumination in the area, large temperature difference between day and night, suitable for apple growth. Since the 1950s, after half a century, especially the rapid development in the 1980s, the acreage now stands at 770,000hm2 and has become one of the major apple producing areas in the country. However, with the growth of apple growing time and the expansion of area, apple pests?