阿克苏苹果叶螨生物防控试验

打开文本图片集

中图分类号：S436.11 文献标识码：A

Abstract：【Objective】To studythecontrol effect feasibility predatory mites carrying Beauueria bassiana spores on harmful mites in appleorchards.【Methods】Inthefield，three treatment plots weresetup：abiologicalcontrolplot（releasing predatory mitescarying Beauveria bassanaspores），achemical control plot，a blank control plot.Periodic surveys were conducted onthe population dynamics eggs pest mites （adult mites，nymphs， larvae）in each treatment plot.The population reductionrate was calculated tocompare thecontrolefectsdiferent measures.【Results】Thechemical control effect was the fastest most significant，with the maximum control efficiency reaching 91% . The biological control effect showed a slowly increasing trend， peaking 2O days after release，with a population reduction rate 36.8% ，which was a highly significant difference （ P<0.05 ）compared with the blank control plot（with a reduction rate -96% ）. 【Conclusion】Using predatory mitescarrying Beauoeria bassiana spores tocontrol harmful mites inapple orchards hasagood control effect，but external factors have certain impacts on the control efficacy.

Key Words： predatory mite；Beauveria bassiana；biological control；apple orchard;spider mite

阿克苏地区位于中国新疆维吾尔自治区南部，属于暖温带沙漠型气候，该区域昼夜温差较大，日照时长充足，利用天山冰川雪融水进行灌溉，水质甘甜清冽[1]，使阿克苏苹果具有脆甜多汁的特点。（剩余2956字）