| 黄刺蛾幼虫在核桃幼园的空间分布型及抽样技术 |
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| 引用本文： | 李建军,李修炼,冯纪年,李东鸿,花蕾.黄刺蛾幼虫在核桃幼园的空间分布型及抽样技术[J].安徽农业科学,2010,38(36). |
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| 作者姓名： | 李建军 李修炼 冯纪年 李东鸿 花蕾 |
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| 作者单位： | 西北农林科技大学植物保护学院,陕西杨凌,712100 |
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| 基金项目： | 西北农林科技大学科技推广项目 |
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| 摘 要： | 目的]研究黄刺蛾幼虫在核桃幼园的空间分布型与抽样技术,为其测报和防治提供理论依据。方法]采用聚集指标法,Iwao回归分析法和Taylor指数法评判黄刺蛾幼虫的空间分布型,根据Iwao-Kuno理论抽样数学模型确定其理论抽样公式。结果]测定的聚集指标值C>1,I>0,K>0,m*/x>1,CA>0;Iwaom*-m回归中α=5.845 6>0,β=1.996 6>1;Taylor指数lga=0.741 6>0,b=1.474 0>1。聚集均数λ>2。结论]黄刺蛾幼虫在核桃幼园的空间分布型为聚集分布,聚集度随密度增大而增强。聚集原因由昆虫本身习性和环境共同引起的。其最适理论抽样公式为n=t2/D2(6.845 6/x+0.996 6)。
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| 关 键 词： | 黄刺蛾 空间分布 抽样技术 |
Spatial Distribution Pattern and Sampling Technique of Cnidocampa flavescens Larva in Walnut |
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| LI Jian-jun et al.Spatial Distribution Pattern and Sampling Technique of Cnidocampa flavescens Larva in Walnut[J].Journal of Anhui Agricultural Sciences,2010,38(36). |
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| Authors: | LI Jian-jun |
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| Institution: | LI Jian-jun et al(College of Plant Protection,Northwest A &F University,Yangling,Shaanxi 712100) |
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| Abstract: | Objective]The spatial distribution pattern of Cnidocampa flavescens larva and sampling technique were studied to provide the base for forecasting and control of Cnidocampa flavescens.Method]The spatial distribution pattern of Cnidocampa flavescens larva was examined by aggregation indices,Iwao m*-m regression analysis methods and Taylor indices,the formula of theoretical sampling was determined by the mathematical model of Iwao-Kuno about theoretical sampling.Result]The aggregation indices were C>1,I>0,K... |
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| Keywords: | Cnidocampa flavescens Walker Spatial distribution patter Sampling technique |
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