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苹果园山楂叶螨空间格局的初步研究
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摘要:
本研究采用7种方法,对6组不同虫口密度水平的抽样资料,考察了山楂叶螨雌成螨的树内格局。结果表明,在各密度水平下,山楂叶螨雌成螨在苹果树内的分布格局,均为聚集型。分布的基本成份是疏松的个体群,个体群内的分布是随机的。个体群的大小随种群密度的增加而加大。聚集强度在中等密度(3头/叶)下最高,其次是偏低密度,高密度下最低。
关键词:  山楂叶螨,空间格局
DOI:
基金项目:
SPATIAL PATTERNS OF FEMALE ADULTS OF THE HAWTHORN SPIDER MITE IN APPLE TREES
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Abstract:
Seven mathods were applied to study spatial patterns of female adults ofthe hawthorn spider mite in apple trees. Four of six of samples fit the negativebinomial distribution. All indices indicate that the distribution of the femaleadults was of an aggregate pattern. The female adults of the hawthorn spidermite occur as loose colonies Distribution of the colonies is aggregate andintra-colony distribution is random.
Key words:  Hawthorn spider mite,Spatial pattern

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