【摘要】 聚集度指标测定，表明桔全爪螨种群在柑桔树上为聚集分布，空间结构呈现疏松的个体群，个体群间为聚集分布，个体群内为随机分布。方差分析表明该种群的聚集强度在树冠的上、下部间差异显著。更多还原

【Abstract】 The indices of aggregation indicate P. citri has an aggregated distribution in citrus trees. its spacial pattern presents loose colonies, the distribution of the colonies is also aggregated and the individuals in the colonies show random distribution. Variance analyses indicate the cluster intensity of this population is significant difference between the upper and lower crowns of citrus trees.更多还原