| 崔晓宁，沈慧敏，郑开福，张新虎*.苹果园镰螯螨种群的时空动态分析[J].植物保护,2012,38(3):54-58. |
| 苹果园镰螯螨种群的时空动态分析 |
| Time-series and spatial dynamics of Tydeus population in apple tree gardens |
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| DOI： |
| 中文关键词: 镰螯螨 发生规律 空间格局 |
| 英文关键词:Tydeus time series dynamics spatial pattern |
| 基金项目: |
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| 中文摘要: |
| 根据田间实际调查结果，应用5种聚集度指标和Iwao法分析了镰螯螨在人为干扰因素较小的苹果园内种群的发生动态和空间格局。结果表明：7-10月，镰螯螨种群数量随着时间变化表现为先升高后降低的趋势，8月初达到发生高峰期。除树冠下层呈现均匀分布外，其他部位均呈现聚集分布，分布的基本成分是个体群。8月1日到10月1日，各部位间种群聚集度变化平稳；10月1日到10月16日，树冠下层、西面和北面的聚集度略有增高。在苹果园生态系统中，芬兰真绥螨、叶螨、镰螯螨三者不仅相互制约而且相互依存。当果园内叶螨种群数量随捕食螨的作用而降低到较低水平后，镰螯螨作为主要捕食螨—芬兰真绥螨的重要补充猎物，对于维持芬兰真绥螨一定的种群数量和苹果园生物多样性及其数量的动态平衡具有十分重要的作用。 |
| 英文摘要: |
| The time series dynamics and spatial pattern of Tydeus population in apple tree gardens with lower artificial interference were analyzed by calculating five indices of aggregation, and parameters of Iwao model according to practical surveys. The results showed that the number of population increased before August 1st and then gradually decreased from August to October. The peak occurred on August 1st. The spatial pattern of Tydeus in apple tree garden belonged to an aggregated distribution pattern, but the lower crown belonged to uniform distribution pattern. The population was distributed in individual colonies. Its aggregation intensity was kept in a certain level from July 1st to October 1st, and then increased in lower, east, north crowns from October 1st to the middle of October. Euseius finlandicus, spider mites and Tydeus were inter restricted and interdependent in the ecosystem of apple tree garden. Tydeus was main prey of E. finlandicus when spider mite population decreased to a lower level. Tydeus played an important role in maintaining the number of E.finlandicus population and biological diversity and dynamic balance of population number in apple tree garden. |
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