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两种梢斑螟幼虫空间分布型及抽样技术 预览

Spatial Distribution Pattern and Sampling Technique for Two Species of Dioryctria Larvae
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摘要 为了研究冷杉梢斑螟(Dioryctria abietella)和赤松梢斑螟(D.sylvestrella)幼虫的空间分布格局和抽样技术,并为该虫的实地调查与防治提供理论依据,应用7个聚集指标以及Iwao的m*-m回归分析法对2种梢斑螟幼虫的空间分布型和抽样技术进行了研究。结果表明:冷杉梢斑螟和赤松梢斑螟在东南西北4个方位上的分布无明显差异。在结实量较高的样地,球果被害率和每株虫口密度,冷杉梢斑螟显著高于结实量较低的样地,赤松梢斑螟则差异不显著。2种梢斑螟的7个聚集度指标均显示为聚集分布,且分布的基本成分为个体群,冷杉梢斑螟个体间相互排斥,赤松梢斑螟个体间相互吸引。聚集均数λ>2,表明聚集分布是由2种梢斑螟各自的聚集习性和环境因素的共同作用引起的。通过Iwao的m*-m回归法的2个分布参数α和β值计算出了在不同结实量下2种梢斑螟幼虫的理论抽样数据表及序贯抽样数据表,可在生产调查防治中查阅使用。综上所述,2种梢斑螟的空间分布格局均为聚集分布,但二者的个体间关系不同;不同的害虫种类有不同的防治指标,在野外调查害虫发生情况时,依据抽样数据表判断害虫发生趋势,确定并采取适当的管控措施。 Dioryctria abietella and D. sylvestrella are among the most damaging shoot/cone pest insects in the Korean pine plantations in Heilongjiang Province, China. The Iwao’s patchiness regression models and seven aggregation indexes were used to analyze the data. The distributions of D. abietella and D. sylvestrella larvae in all four cardinal directions of the pine trees were not significant different. The cone damaged rates and larval densities of D. abietella in the high cone-bearing plots were significantly higher than those in the low cone-bearing plots;however, no significant differences of these two variables for D. sylvestrella were found between the high and low cone-bearing pine plots. The seven aggregation indexes showed that the larvae of both species had aggregated spatial distribution, and the basic distribution component is the individual insect. The individuals of D. abietella larvae were exclusive of each other, whereas the individuals of D. sylvestrella larvae attracted to each other on the Korean pine trees.λ>2 indicates that the aggregation distribution is likely caused by both their aggregation behaviors and environmental factors. The optimal sampling sizes and sequential sampling plans for larvae of these two moth species in different levels of cone-bearing pine stands were calculated through the Iwao’s m *-m regression coefficients:α and β. Therefore, the larval spatial distribution patterns of D. abietella and D. sylvestrella were both aggregated, but their intra-specific individual relationships were different between these two Dioryctria species. Based on the sampling techniques/plans, one can estimate the moth population trends/dynamics and then take optimal measures to control these economically important pest insects.
作者 牛豪杰 王琪 严善春 陈刘阳 Niu Haojie;Wang Qi;Yan Shanchun;Chen Liuyang(Northeast Forestry University, Harbin 150040, P. R. China;Heilongjiang Forestry Protection Institute;Northeast Forestry University)
出处 《东北林业大学学报》 CAS CSCD 北大核心 2019年第7期103-107,共5页 Journal of Northeast Forestry University
基金 “十三五”国家重点研发计划项目(2018YFD0600204) 中国博士后科学基金项目(2013M541421) 黑龙江省博士后资助基金项目(LBH-Q13181) 黑龙江省森林工业总局应用研究项目(sgzjY2013006) 黑龙江省财政基本科研业务费项目(2017-47)。
关键词 红松 梢斑螟 空间分布 聚集因素 抽样技术 Pinus koraiensis Dioryctria Spatial distribution Aggregation factors Sampling technique
作者简介 第一作者:牛豪杰,男,1995年7月生,东北林业大学林学院,硕士研究生。E-mail:583956802@qq.com;通信作者:王琪,黑龙江省林业科学院森林保护研究所,副研究员。E-mail:qiqi8325@163.com;通信作者:严善春,东北林业大学林学院,教授。E-mail:yanshanchun@126.com。
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