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本文用扩散系数理论和Blackith(1961)群聚均数,分析研究桔始叶螨春季从二年生秋梢向当年春梢转移为害规律,结果认为该螨春季扩散多为聚集型扩散。在高峰期以前,春梢上种群数量与二年生秋梢上的种群数量呈明显负相关,而高峰期后螨群大大减退,二者呈正相关。同时,通过栖境幅度分析,对春秋梢和春梢各叶位的栖境异质性进行初步探讨,结果可为该螨的抽样、测报和为害等方面的研究提供理论依据。
In this paper, diffusion coefficient theory and Blackith (1961) cluster averages were used to analyze the rules of the transfer of autumn spider mite from spring perennial to autumn spring shoots. The results showed that spring mites mostly distributed in spring. Before the peak, there was a significant negative correlation between the population of spring shoots and the population of two-year autumn shoots, but the mite group greatly decreased after the peak, which showed a positive correlation. At the same time, the habitat heterogeneity of spring and autumn shoots and spring shoots was preliminarily analyzed through habitat amplitude analysis. The results could provide a theoretical basis for the study of sampling, measuring and killing of the mites.