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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (20): 139-143.doi: 10.11924/j.issn.1000-6850.casb17050094

Special Issue: 烟草种植与生产

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Myzus persicae: Occurrence Rule and Control Effect Evaluation in Liangshan Tobacco Region of Sichuan

  

  • Received:2017-05-22 Revised:2018-01-19 Accepted:2018-01-25 Online:2018-07-13 Published:2018-07-13

Abstract: The paper aims to clarify the occurrence rule and the control effect of Myzus persicae by natural enemy in Liangshan tobacco region of Sichuan. The occurrence rule of M. persicae was investigated in main tobacco region of Liangshan, Sichuan in 2015 and 2016 by the 5- point sampling method, respectively. Meanwhile, Coccinella septempunctata, Harmonia axyridis and Aphidius gifuensis were used to control M. persicae. The results indicated that: there was obvious seasonal dynamic of M. persicae in 2015 and 2016, but the two years had great differences; the occurrence rule of M. persicae was“M”type in counties of Liangshan except Mianning in 2015, where the occurrence was single peak type , however, no“M”type was found in the 5 counties in 2016, the occurrence was found to be one peak type in each county. The control effect of Aphidius gifuensis was lagged behind that of Coccinella septempunctata and Harmonia axyridis, and the sustained control ability on M. persicae decreased in order of Coccinella septempunctata>Harmonia axyridis>Aphidius gifuensis> chemicalpesticide.