| 杉梢小卷蛾空间分布型与抽样技术的研究 |
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| 引用本文： | 温绍生 龚其锦. 杉梢小卷蛾空间分布型与抽样技术的研究[J]. 南京林业大学学报(自然科学版), 1989, 13(4): 80-84 |
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| 作者姓名： | 温绍生 龚其锦 |
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| 作者单位： | 福建省三明市林业委员会，福建省三明市林业委员会，福建省三明市林业委员会，福建省三明市林业委员会，福建省沙县林业委员会，福建省沙县林业委员会 南京林业大学林学系研究生 |
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| 摘 要： | 1984～1985年在福建省沙县和三明市郊调查了杉梢小卷蛾幼虫和蛹的空间分布,用比较频次法和几种聚集度指标进行分布型的测定。结果表明,幼虫和蛹多数样地都符合聚集分布。估计了最适抽样数,比较了五种抽样方法的适用性,提出了幼虫和蛹的最佳抽样方法。求得的有虫(蛹)株率与百株虫(蛹)量的回归式,可供生产上应用。
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| 关 键 词： | 杉梢小卷蛾 空间分布型 抽样技术 |
A STUDY ON THE SPATIAL DISTRIBUTION PATTERNS AND SAMPLING TECHNIQUE OF POLYCHROSIS CUNNINGHAMIACOLA |
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| Wen Shaosheng,Cheng Guoshun,Thang Zaifu,Gao Gangfeng. A STUDY ON THE SPATIAL DISTRIBUTION PATTERNS AND SAMPLING TECHNIQUE OF POLYCHROSIS CUNNINGHAMIACOLA[J]. Journal of Nanjing Forestry University(Natural Sciences ), 1989, 13(4): 80-84 |
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| Authors: | Wen Shaosheng Cheng Guoshun Thang Zaifu Gao Gangfeng |
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| Abstract: | The present paper deals with the spatial distribution patterns and sampling technique of Polychrosis cunninghamiacola which were carried out in Sha county and the suburbs of Sanming city, Fujian province from 1984 to 1985. Frequency chech methods and several aggregation indices were used to determine the spatial distribution patterns. Most larvae and pupae were of aggregated patterns. The optimal sampling sizes were determined. Five sampling methods were compared and the ones most suitable for the investigations of larvae and pupae were suggested. The equations based on the relationships between percentage of the trees with larvae or pupae and the numbers of larvae or pupae per 100 trees were built up, they can be applied to practical investigations. |
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| Keywords: | Polychrosis cunninghamiacola Spatial distribution patterns! Sampling techniques |
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