摘要： 对设施条件下的截形叶螨在枣树内的空间分布进行了研究,并用聚块性指标分析了聚集强度的时序变化,结果表明:截形叶螨在枣树不同方位、不同层次上的分布格局均呈聚集,分布的基本成分是个体群.树冠上层和南向的平均密度虽然较高,但聚集强度则以下层和北向的为高.
关键词:
截形叶螨,
空间格局,
设施枣园
Abstract: Based on the analysis of the data from a preliminary investigation, the comparative method of I-wao method, Caylor method and aggregated index method were used to study the spatial pattern of Tetranychus Fruncatus. The results showed that the distribution of this mite was an aggregate pattern and the mites occur as colonies; Although the upper and southern crowns had higher mean crowding, the index of patchiness M/M were higher in the lower and northern crown.
Key words:
Tetranychus truncatus,
Spatial pattern
中图分类号:
赵飞, 李捷, 牛荣山, 贺润平. 设施枣园截形叶螨空间格局研究[J]. 华北农学报, 2003, 18(3): 65-67. doi: 10.3321/j.issn:1000-7091.2003.03.017.
ZHAO Fei, LI Jie, NIU Rong-shan, HE Run-ping. Spatial Patterns of Tetranychus fruncatus in Jujube Greenhouse[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(3): 65-67. doi: 10.3321/j.issn:1000-7091.2003.03.017.