柳毒蛾幼虫和蛹的空间分布的地统计学分析  

Geostatistical analysis of the spatial distribution of Leucoma salicis larvae and pupae

作　　者：孙鹏举[1] 骆有庆[1] 姚东华 刘春亮 宗世祥[1] 

机构地区：[1]北京林业大学,林木有害生物防治北京市重点实验室,北京100083 [2]陕西省榆林市榆阳区林业工作站,榆林719013 [3]陕西省榆林市榆阳区巴拉素林场,榆林719000

出　　处：《植物保护学报》2015年第4期604-611,共8页Journal of Plant Protection

基　　金：国家"十二五"科技支撑计划(2012BAD9B07)

摘　　要：为有效控制柳毒蛾Leucoma salicis对沙柳Salix psammophila的为害,深入了解柳毒蛾幼虫和蛹的种群空间结构,利用地统计学方法分析了不同立地条件下不同年龄沙柳林地中柳毒蛾幼虫和蛹的空间分布特性。结果表明:柳毒蛾幼虫和蛹的数量在沙丘顶部最多,每丛沙柳中分别为17.03±5.15和15.24±5.26头,与在沙丘底部的数量分布差异不显著;在多年生沙柳林地内的数量分布最多,每丛分别为20.31±2.39和18.02±3.19头,与2年生沙柳林地内的数量分布差异极显著。沙丘顶部多年生沙柳、沙丘顶部和底部2年生沙柳上柳毒蛾幼虫和蛹的空间分布均呈聚集条带状分布,聚集斑块由聚集中心区域向四周逐渐减小;沙丘底部多年生沙柳上幼虫和蛹的空间分布为随机分布;不同样地内,柳毒蛾蛹和幼虫在沙柳上的空间分布相同。In order to effectively control the hazard of Leucoma salicis to Salix psammophila,and make an insight into the spatial structure of L. salicis population,geostatistical methods were used to analyze the spatial characteristics of L. salicis larvae and pupae in S. psammophila woodlands in different site conditions and ages. The results showed that the population quantity of L. salicis larvae and pupae reached the maximum at top of the dune with 17. 03 ± 5. 15 and 15. 24 ± 5. 26 heads / crowd,respectively,which had no significant difference compared with the quantity distribution at bottom of the dune. The quantities of L. salicis larvae and pupae in perennial S. psammophila woodlands were the largest with the numbers of 20. 31 ± 2. 39 and 18. 02 ± 3. 19 heads / crowd,respectively,which differed from those in biennial woodlands significantly. Geostatistical analysis showed that L. salicis larvae and pupae distributed as aggregated stripes in the sample plots of perennial woodlands at top of the dune,and biennial woodlands both at top and at bottom of the dune. The aggregated plaques decreased slightly from the aggregation center to edges. The L. salicis larvae and pupae in the sample plots of perennial woodlands at bottom of the dune were distributed randomly. The spatial distribution patterns of the L.salicis larvae and pupae were similar in different sample plots.

关 键 词：柳毒蛾 幼虫 蛹 空间分布 地统计学 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]