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中国沙漠 ›› 2008, Vol. 28 ›› Issue (4): 712-716.

• 生物土壤与生态 • 上一篇    下一篇

甘草种子害虫的幼虫空间分布与抽样技术研究

杨 芳1, 贺达汉1*, 张大治2
  

  1. 1.宁夏大学农学院, 宁夏 银川 750021; 2.宁夏大学生命科学院, 宁夏 银川 750021
  • 收稿日期:2007-05-22 修回日期:2007-10-09 出版日期:2008-07-20 发布日期:2008-07-20

Studies on Spatial Distribution and Sampling Methods of Bruchidius ptilinoides Faharaeus and Bruchophagus gtycelizae Nikolskya

YANG Fang1, HE Da-han1, ZHANG Da-zhi2   

  1. 1.Agricultural School, Ningxia University, Yinchuan 750021, China; 2.Life Science School, Ningxia University, Yinchuan 750021, China
  • Received:2007-05-22 Revised:2007-10-09 Online:2008-07-20 Published:2008-07-20

摘要: 采用5种不同的判断空间分布格局的聚集度指标,并应用幂法则和回归分析法,得出甘草豆象(Bruchidius ptilinoides Faharaeus)的空间分布型为负二项分布,甘草种子小蜂(Bruchophagus gtycelizae Nikolskya)的空间分布型既属于负二项分布也属于核心分布,甘草种子害虫混合种群的空间分布格局为聚集分布,并得出田间幼虫不同密度时的理论抽样数。

关键词: 甘草豆象, 甘草种子小蜂, 空间分布, 抽样方法

Abstract: Five indices of judging the aggregation of spatial distribution pattern, Tayler Index and Iwao Regression Method were applied to analyze the distribution of Bruchidius ptilinoides Faharaeus and Bruchophagus gtycelizae Nikolskya larvae. The results showed that the spatial distribution of Bruchidius ptilinoides Faharaeus was negative binomial pattern, and Bruchophagus gtycelizae Nikolskya conformed to either the pattern of aggregation or the negative binomial distribution, and the mixed pests population was aggregative distribution too. Optimum sampling method for investigating infestations was formulated through the Iwaos m*-m regression equation.

Key words: Bruchidius ptilinoides Faharaeus, Bruchophagus gtycelizae Nikolskya, spatial distribution pattern, sampling method

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