【摘要】 聚集度指标测定表明，深点食螨瓢虫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各部位无显著性差异。更多还原

【Abstract】 The indexes of aggregation indicate Stethorus punctillum has an aggregated distribution in citrus trees,its spacial pattern presents loose colonies,the distribution of the colonies is also an aggregated one and the individuals in the colonies show a random distribution.Variance analysis indicate the cluster intensites of this population are not obviously different among the crown parts of citrus trees.更多还原