Chinese Journal of Agrometeorology ›› 2015, Vol. 36 ›› Issue (03): 356-363.doi: 10.3969/j.issn.1000-6362.2015.03.014

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Occurrence of Aphis sp. on Lycium barbarum L. and Its Meteorological Grades Forecast in Ningxia

LIU Jing, ZHANG Zong shan, MA Li wen, HUANG Feng, WEI Jian guo, ZHANG Yu lan   

  1. Ningxia Key Laboratory of Meteorological Disaster Prevention and Mitigation,Yinchuan750002,China;Ningxia Plant Protection Institute of Agriculture and Forest Science Academy,Yinchuan750002;Ningxia Meteorological Bureau,Yinchuan750002
  • Received:2014-09-29 Online:2015-06-20 Published:2015-10-20

Abstract: The initial growth temperature of aphis sp.was defined according to 2 feeding experiments under different temperature treatments in the HGP280H type climatic cabinet,the equation between growth rate of aphis sp.and temperature was established based on the initial growth temperature.The breeding date of each generation and annual total generations from 1991 to 2012 were estimated by using the equation,taking 50℃ as aphis sp.initial growth threshold temperature.The meteorological indicators and prediction model on aphis sp.hazard grades were determined,according to the statistic relationship between population density and its meteorological factors from 2006 to 2008,and verified by using investigated data in Zhongning in 2012.The result showed that the average initial occurring date of aphis sp.was on March 27 and ending date was in later of October.Aphis sp.could breeding 21-23 generations each year,of which 3-12 generations was serious damaged.Drying and sunshine was benefit to them growth and development,and rainy and high humidity inhibited them development.The accuracy of the model and meteorological indicators was 88.2% and the accuracy of offsite observed data was 100%.Those models and meteorological indexes were suitable for monitoring aphis sp.growth state and forecasting hazard grades.

Key words: Lycium barbarum L, Aphis sp, Number of breeding generations, Meteorological grades, Agrometeorological index