果树混栽区梨小食心虫的发生规律与防治措施

Occurrence regularity and control measurement of Grapholitha molesta in the fruit trees interbreed district

调查了龙泉驿区果树混栽区内桃梨小食心虫的生物学特性,运用性诱剂预报法诱蛾测报虫情,筛选最佳防治措施。结果表明,梨小食心虫在龙泉驿区一年发生5代,以老熟幼虫在枝、干、根颈部粗裂皮缝里、树下落叶、土里结茧越冬,7月底至8月上旬幼虫为害枝梢最为严重,防治上采取成虫和幼虫防治相结合的综合措施。

The biological characteristic were studied of Grapholitha molesta in peach garden in Longquanyi District. The method of sex attract- ant was used to predict the insect pest situation and the result of prevention and cure measures were investigated. The results showed that the insect had five generations in Longquanyi District in one year. The result indicated that mature larva in the branch, trunk ,root-cervical part, coarse cracked dermo-seam, deciduous trees, cocooning overwintering in soil, larvae on shoot would cause the most serious damage in the end of July to the first ten days of August. The combination prevention and cure measures were applied by using the combination of prevention and cure imago and larvae