摘要： 应用聚集度指标检验、线形回归方程检验方法研究探讨了桃蛀螟越冬幼虫在玉米田垂直方向和水平方向的空间格局.结果表明,该害虫主要在玉米秸的穗节处越冬,在垂直方向和水平方向的空间格局均为聚集分布,这种聚集主要由环境因素引起.在回归分析检验中,3种回归模型以Talor(1961)幂法则拟合效果最好.
关键词:
桃蛀螟,
空间格局,
聚集度指标,
玉米田
Abstract: The spatial pattern of overwintering larvae of Dichocrocis punctiferalis Guenee was examined by the aggregation indices and liner regression analysis in the corn field of vertical and horizontal direction. The re-sults showed that the pest hibernates mostly in ear joint of corn and its spatial pattern belonged to the aggregated distribution both in vertical and horizontal direction. The aggregation was caused by the environmental factors. Among the regression analysis, the liner related degree of Talor regression model was the best.
Key words:
Dichocrocis Gurcctiferalis Guenee,
Spatial pattern,Aggregatiori indices,Corn field
中图分类号:
周洪旭, 乔晓明, 孙立宁, 郑佰平, 赵春生. 桃蛀螟越冬幼虫在玉米田的空间格局[J]. 华北农学报, 2004, 19(3): 106-109. doi: 10.3321/j.issn:1000-7091.2004.03.027.
ZHOU Hong-xu, SUN Li-ning, ZHENG Bai-ping, ZHAO Chun-sheng. Studies on the Spatial Pattern of Overwintering Larvae of Dichocrocis punctiferalis Guenee in the Corn Fields[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2004, 19(3): 106-109. doi: 10.3321/j.issn:1000-7091.2004.03.027.