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茂汶羌族自治县位于川西北高原的东南边缘,全县22个乡共有苹果树50多万株。其中挂果树25万株左右,产量1,000万斤。果品质量好,曾在全国鉴评会上三次夺魁。但一段时间由于果园病虫猖獗,特别是桃小食心虫的严重危害,致使产量和质量都显著下降。1984年全县进行了苹果桃小食心虫的大面积防治,取得了显著效果。一、主要技术措施:采取地面防治和树冠防治相结合的方法。按各区、乡不同气候、地理条件,当本地旬平均气温达17℃时,为地面防治适期。当性诱剂诱集雄成虫开始持续增长时,果园内又发现苹果挂“泪珠”时,为树冠防治适期。
Maowen Qiang Autonomous County is located in the southeast edge of the plateau northwestern Sichuan, the county 22 township has a total of more than 5000000 apple trees. Among them, there are about 250,000 hanging fruit trees, yielding 10 million catties. Fruit good quality, has won the first prize in the National Appraisal Council three times. However, due to the rampant pests and diseases in the orchard, especially the serious damage caused by peach moth, the yield and quality have been significantly decreased. In 1984, the county conducted a large area control of apple peach mungbean and achieved remarkable results. First, the main technical measures: to take the combination of ground control and crown prevention methods. According to the districts and townships of different climates and geographical conditions, when the local average temperature reaches 17 ℃, it is suitable for ground control. When the sexual attractant trapping male adults began to grow, the apple orchard found “tears” when the crown for the prevention and control.