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桃小食心虫在山西省是常发性蛀果害虫。分布于忻州地区以南的县(市),一年发生1—2代。危害面积达50多万亩,占山西省苹果结果树的80%以上。危害程度为中度发生.作者通过几年的实际工作和广泛的调查,认为桃小的为害程度不仅受气候因素和寄主因素的影响,更主要是受人类生产活动的影响。因此从农业生态学的整体观念出发,对桃小发生程度的主要因素进行分析:即①山西省桃小发生危害现状;②山西省苹果生产发展状况;③山西省1987—1994年的天气预报;④桃小测报与防治技术推广应用对桃小发生的影响;⑤
Peach mung bean worm is a perennial fruit borer in Shanxi Province. Distributed in the south of Xinzhou County (city), occurred 1-2 generations a year. Hazardous area of more than 50 million mu, accounting for more than 80% of the apple tree in Shanxi Province. The degree of harm is moderate.According to several years of practical work and extensive investigation, the author thinks that the degree of peach damage is not only affected by climatic factors and host factors, but mainly by human activities. Therefore, from the overall concept of agroecology, the main factors affecting the occurrence of peach fruit are analyzed: ①the occurrence of peach fruit in Shanxi Province; ② the status of apple production in Shanxi Province; ③ the weather forecast of Shanxi Province in 1987-1994; ④ peach small test and prevention and control technology to promote the application of peach small impact; ⑤