桔小实蝇在干热河谷区元谋枣园年发生动态研究

Dynamics of Bactrocera dorsalis in Jujube Orchards in Dry Hot Valley of Yuanmou

桔小实蝇[Bactrocera dorsalis(Hendel)]是危害干热河谷区台湾青枣(Ziziphus mauritiana Lam.cv.Liuxiang)和金丝小枣(Ziziphus Jujube.cv Jinsi-xiaozao)的重要害虫之一。对典型干热河谷气候区云南元谋台湾青枣和金丝小枣园桔小实蝇成虫的年发生动态进行调查,并就气候因子及食源寄主植物进行综合分析。结果表明:台湾青枣园桔小实蝇诱捕量明显高于金丝小枣园;桔小实蝇成虫在金丝小枣、台湾青枣上分别拥有1个(8月)、2个(2、8月)发生高峰期,高峰期与果实成熟期基本吻合;月均温、月降雨量和食源寄主植物是种群变动的主要因子。通过两种枣园桔小实蝇的监测,掌握种群动态的变化,可为适时制定桔小实蝇防治时期提供理论依据。

Bactrocera dors dis is one of the important insect pests harm Ziziphus mauritiana Lam. cv. Liuxiang and Ziziphus jujube, cv Jinsixiaozao in the dry hot valley. The text conduct a comprehensive analysis on the annual dynamics survey, climatic factors, food resources and host plants of Bactrocera dorsalis adult in the typical dry-hot valley of Yuanmou. The results show that the Bactrocera dorscdis in Ziziphus mauritiana Lam. cv. Liuxiang trap significantly higher than Ziziphus jujube, cv Jinsixiaozao; Bactrocera dorsalis adults in Ziziphus ma^ritiana Lam. cv. Liuxiang and Ziziphus jujube, cv Jinsixiaozao have one （August）, two （February and August） peak, the peak period is basically consistent with fi＇uit maaaity; the monthly mean temperature, monthly rainfall and food source host plants are the main factors of population fluctuations. To master tile changes in the population dynamics of Bactrocera dorsalis by two kinds of Zaoyuan monitoring, can timely provide a theoretical basis for Bactrocera dorsalis control period.