| 苹果黄色叶螨(Eotetranychus sp.)种群空间分布型的研究 |
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| 引用本文： | 蔡如希,郑友强.苹果黄色叶螨(Eotetranychus sp.)种群空间分布型的研究[J].四川农业大学学报,1991,9(2):308-313. |
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| 作者姓名： | 蔡如希 郑友强 |
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| 作者单位： | 四川农业大学，四川农业大学，小金县林业局 |
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| 摘 要： | 本文根据田间调查资料,用7种检验分布型的方法进行检定,得出苹果黄色叶螨的分布型呈聚集分布。聚集程度是卵>若螨>成螨。成、若螨是以松散个体群存在,卵是以紧密个体群存在。以各虫态平均密度横向看,中部显著高于其它方位。从纵向看,各方位都显示出若螨>卵>成螨的规律。
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| 关 键 词： | 苹果(49EL) 苹果叶螨(49LA) 果树害虫(19LA) 黄色叶螨 空间格局 聚集指标 种群 |
A STUDY ON THE SPATIAL PATTERN OF EOTETRANYCHUS SP.ON APPLE |
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| Cai Ruxi at al.A STUDY ON THE SPATIAL PATTERN OF EOTETRANYCHUS SP.ON APPLE[J].Journal of Sichuan Agricultural University,1991,9(2):308-313. |
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| Authors: | Cai Ruxi at al |
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| Abstract: | The spatial distribution pattern of Apple yellow mite (Tetranychus sp.) was analyzed by seven aggregation indices.The results showed that the type of the distribution of the eggs、nymphs and adults was ageregated. The density was eggs nymphs and adults in proper order. Adults and nymphs lived in groups of individual looscly, eggs were laid densely.In the horizontal average density of these various stages of mites the middle part was evidenly higher than the other parts. In vertical average density, nymphs density were higher than the others and the eggs were higher than the adults. |
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| Keywords: | SUBJECT WORDS: APPLE EUROPEAN RED MITE FRUIT TREE PEST INSECTS FREE WORDS: EOTETETRANYCHUS SP DYNAMICS AGGREATION INDICS POPULATION |
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