摘要
为了掌握旋心异跗莹叶甲的生态学特性和有效的田间抽样技术,对旋心异跗莹叶甲成虫在丹参地的空间分布型和抽样技术进行调查与研究。结果表明,旋心异跗莹叶甲成虫在丹参地的空间分布符合负二项分布;聚集度指标检验表明,空间分布图式是聚集分布,当虫口密度较小时,聚集分布由环境因素引起,当虫口密度较大时,聚集分布原因受环境因素的差异与昆虫自身聚集习性的综合影响;Iwao的m*-m直线回归法分析及Toylar的幂的法则进一步说明,种群在田间空间分布格局为聚集分布,成虫个体间相互排斥,种群在一切密度下都是聚集分布,而且具有密度依赖性;并拟合了成虫田间的理论抽样数学模型。
Apophylia flavovirens （Fairmaire） is one new pest to Salvia miltiorrhiza Bunge.The spatial distribution pattern of the adults of A. flavovirens （Fairmaire） in the S. miltiorrhiza field and its sampling model were studied in order to know well its ecological characteristic and effective sampling model.The spatial distribution pattern of A. flavovirens （Fairmaire） conformed to the negative binomial distribution in field. It was also tested that the distribution pattern was aggregative distribution by aggregation indexes, which was caused by environmental heterology with lower density and by environmental heterology and their aggregative characteristic with their higher density. These results were further proved by the use of Toylar ＇ s and Iwao ＇ s methods, and the individual of A. flavovirens （Fairmaire） adults excluded each other. The aggregative level increased along with the increasing of their population density. The models of theoretical sampling of A. flavovirens （Fairmaire） adult in the S. miltiorrhiza field had been set up.
出处
《农学学报》
2011年第8期24-28,共5页
Journal of Agriculture
基金
陕西省科学技术研究发展计划项目"丹参新害虫旋心异跗莹叶甲的生物学特性及防治技术研究"(2010K17-06)
中科院"西部之光"人才培养计划项目"中草药重大害虫灾变规律及防控技术研究"(2007DF03)
陕西省科学院应用基础研究项目"中草药害虫旋心异跗莹叶甲的生物学特性及成灾机理研究"(2009K-13)
关键词
丹参
旋心异跗莹叶甲
空间分布型
抽样技术
聚集度指标
Salvia
Apophylia flavovirens （Fairmaire）
Spatial Distribution Pattern
Sampling Model
Aggregation Index
