油茶尺蠖动态经济阈值的研究  

Dynamic Economic Threshold of Oiltea Tree Geometrid

作　　者：莫建初[1] 王问学[1] 李益辉[1] 张才学[1] 胡求凡 朱志亨 刘瑜 

机构地区：[1]株洲中南林学院,湖南省林业厅营林局,湖南省常宁县林业局

出　　处：《经济林研究》1994年第2期40-45,共6页Non-wood Forest Research

基　　金：湖南省林业厅营林局下达的油茶低产林改造研究

摘　　要：运用人工模拟为害方法，研究了油茶尺蠖（ＢｉｓｔｏｎｍａｒｇｉｎａｔａＳｈｉｒａｋｉ）为害对油茶生长、发育的影响。严重为害不仅引起油茶减产，而且影响植株的生长势和生产潜力；轻度为害可使植株改变内部生理机能，生长出现补偿和超补偿现象。在研究为害程度与产量损失关系基础上，按经济阈值原理提出了油茶尺蠖的经济阈值动态模型，为油茶尺蠖的综合管理提供了理论依据。The effects of injury by oiltea tree geometrid , Biston marginata, on the growth ofCamellia oleifera were determined with the methed of artificial simulated injury. Results showthat serious damage not only caused the oil yield to decreae,it also affected the developmental im-petus and productive potential of the plant.Slight injury was found to be able to cause the plantto change its internal physiological function,giving rise to the compensative or supercompensativephenomenon of growth.An analysis of the correlation of the degree of pest damage to the loss ofoil yield was conducted,on the basis of which some dynamic models regarding the economicthreshold of the pest were derived from the principle of economic threshold.

关 键 词：油茶尺蠖 经济阈值 动态模型 危害 

分 类 号：S763.744[农业科学—森林保护学]