| 甘草种子害虫的幼虫空间分布与抽样技术研究 |
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| 引用本文： | 杨芳,贺达汉,张大治. 甘草种子害虫的幼虫空间分布与抽样技术研究[J]. 中国沙漠, 2008, 28(4): 712-716 |
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| 作者姓名： | 杨芳 贺达汉 张大治 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 甘草豆象 甘草种子小蜂 空间分布 抽样方法 |
| 收稿时间： | 2007-05-22 |
| 修稿时间： | 2007-10-09 |
Studies on Spatial Distribution and Sampling Methods of Bruchidius ptilinoides Faharaeus and Bruchophagus gtycelizae Nikolskya |
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| YANG Fang,HE Da-han,ZHANG Da-zhi. Studies on Spatial Distribution and Sampling Methods of Bruchidius ptilinoides Faharaeus and Bruchophagus gtycelizae Nikolskya[J]. ournal of Desert Research, 2008, 28(4): 712-716 |
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| Authors: | YANG Fang HE Da-han ZHANG Da-zhi |
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| Affiliation: | 1.Agricultural School, Ningxia University, Yinchuan 750021, China; 2.Life Science School, Ningxia University, Yinchuan 750021, China |
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| 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 Iwaos m*-m regression equation. |
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| Keywords: | Bruchidius ptilinoides Faharaeus Bruchophagus gtycelizae Nikolskya spatial distribution pattern sampling method |
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