Investigation on Occurrence of Lithocolletis ringoniella Adults in New and Aged Apple Orchards in Shijiazhuang Area

[Objective]The paper was to investigate the occurrence of Lithocolletis ringoniella adults in aged and new apple orchards in Shijiazhuang area.[Method]The growth and decline dynamics of L.ringoniella adults in 3a apple orchard and 17a apple orchard in Shijiazhuang were monitored by sex attractant trapping method.Meantime,the trapping effects of sex attractant on L.ringoniella were compared with that of sweet-sour liquor.[Result]L.ringoniella occurred five generations annually in Shijiazhuang area.The adults emerged in April,and entered into peak occurrence period during May and June,with overlapping generations.Comparison between sex attractant and sweet-sour liquor tests showed that the trapping effect of sweet-sour liquor received little effect,but was expensive.Therefore,it is not recommended to use sweet-sour liquor for prevention and treatment of L.ringoniella in production.[Conclusion]In the actual production,sex attractant trapping should be combined with appropriate agricultural control measures to control the damage of L.ringoniella.

基于Choquet积分的非线性虫害预测

做好农作物的病虫害预测工作具有一定的经济意义,也是农业现代化的必要内容之一。病虫害的发生受到多方面因素的综合影响,这些因素所起的作用相互交织。新兴的模糊测度与模糊积分理论能较好地分析多因素的交互作用。将模糊测度和Choquet积分应用于虫害预测,建立非线性害虫预测数学模型,并对不同地域的金纹细蛾(Lithocolletis ringoniella)数据进行检测,结果表明该数学模型具有很好的预测效果。