| 苹果园金纹细蛾种群动态及空间分布 |
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| 引用本文：曹春玲，李 鑫，吴素蓉，田 甜，郭长宁.苹果园金纹细蛾种群动态及空间分布[J].西北农业学报,2014,23(2):169~175 |
| DOI:10.7606/j.issn.1004-1389.2014.02.029 |
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| 基金项目:陕西省农业攻关项目（2008K01 04）；世界银行资助项目（Y/SHYL/XY/050）。 |
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| 中文摘要:金纹细蛾（Lithocolletis ringoniella Matsumura）是中国苹果产区的重要潜叶害虫，研究金纹细蛾种群消长动态和空间格局，可为该虫的为害调查与防治提供理论依据。应用４个聚集度指标、Taylor的幂法则、Iwao回归法和Bray Curtis Measure系数，对金纹细蛾5代种群的空间分布型和树冠不同方位分布近度进行研究。结果表明：金纹细蛾第1代和越冬代发生量大且整齐，是防治的较佳时期。金纹细蛾的5代种群在苹果树冠上的大部分方位呈聚集分布，个体间相互吸引，其聚集性随密度的增大而增大。运用Bray Curtis Measure系数计算出近度值，显示5代金纹细蛾种群在树冠上的分布形成不同层次上的种群亚层结构。 |
| 中文关键词:金纹细蛾 种群动态 空间分布 5代 |
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| The Population Dynamics and Spatial Distribution of Lithocolletis ringoniella in Apple Orchards |
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| Abstract:Lithocolletis ringoniella is an important leaf miner in apple production areas of China. Studies on population dynamics and spatial distribution pattern can provide theoretical base for the damage survey and control of L. ringoniella in apple trees. In the study, the spatial distribution pattern and the similarity index of five generations in apple trees analyzed with 4 Aggregation indexes, Taylo’s power law, Iwao’s distribution function and and Bray Curtis coefficient. The results showed that the number of the first generation and overwintering generation were big and tidy, so it was the time to control the L. ringoniella. The spatial distribution pattern of 5 generations of L. ringoniella was aggregated, and the basic component of the distribution was individual colony, and the aggregation intensity was increased with population density. By using the Bray Curtis Measure coefficient to calculate the similarity index, the 5 generations of L. ringoniella constituted population sub layer structure at different levels. |
| keywords:Lithocolletis ringoniella Population Dynamics Spatial distribution 5 generations |
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