| 山楂叶螨活动螨空间格局及空间动态研究 |
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| 引用本文： | 刘奇志.山楂叶螨活动螨空间格局及空间动态研究[J].华北农学报,1994,9(1):108-113. |
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| 作者姓名： | 刘奇志 |
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| 作者单位： | 北京农业大学植保系 |
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| 摘 要： | 据１９８９年４－９月在北京延庆辛庄堡苹果园调查资料，以Ｉｗａｏ回归法，Ｔａｙｌｏｒ幂法则及４个聚集指标对山楂螨活动螨在苹果内的空间格局（静态水平），空间动态（时－空－量水平）进行了测定。初步结果表明，该活动螨呈聚集分布，分布的基本成分为个体群。全年发生期可分为前期，中期、后期三个时期（４月、５－６月、７－９月）。前期（叶族）为赵冬螨出蛰期，以东方，上层及内膛的螨口密度大；中期（叶片）为螨口增长期；
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| 关 键 词： | 山楂 叶螨 活动螨 空间格局 |
A Preliminary Study on the Spatial Patterns and Spatial Dynamics of the Hawthorn Spider Mite |
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| Liu Qizhi.A Preliminary Study on the Spatial Patterns and Spatial Dynamics of the Hawthorn Spider Mite[J].Acta Agriculturae Boreali-Sinica,1994,9(1):108-113. |
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| Authors: | Liu Qizhi |
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| Abstract: | Based on the analysis of the data obtained from apple orchards in Beijing area between April and September,1989,the Iwao regression method,the Taylor power principle and 4 aggregated indices were used to test the spatial patterns and dynamics of hawthorn spider mites (Tetranychus viennensis Zacher) at the movable stages (larva,nymph and adult).The results showed that the mites distributed in an aggregative pattern and the basic component of distribution was individual colonies.The annual occurrence of this mite could be divided into three periods (April,May-June and July-Sept.).In April, mites emerged after overwintering and distributed at the highest in the east quadrant,the upper stratum and the inner part of the canopy.The number of mites increased between May and June,and decreased between July and September.In the 2nd and 3rd peneds,little difference was found in distribution density in the 4 quadrants and the density was higher in the lower and middle strata and in the periphery part of the canopy. |
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| Keywords: | Hawthorn spider mites Movable mites Spatial patterns Dynamics patterns |
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