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采用聚集度指标的方法对麦长管蚜种群空间格局进行了初步研究，结果表明麦长管蚜在麦田中的分布为聚集分布，聚集与环境条件和麦蚜本身的聚集行为有关。在５月上旬和６月下旬，各有１个聚集高峰。聚集与扩散趋势呈周期性变化。提出根据公式λ＝１．７１５６［－ｌｎ（１－ｐ）］１．０９２１，由有虫株率估计麦蚜种群密度，并给出了以有虫株率来确定田间发生程度的序贯抽样图。
The results showed that the distribution of Aphis gossypii in wheat field was aggregated and distributed, which was related to the environmental conditions and the aggregation of wheat aphid itself. In early May and late June, each has a gathering peak. Aggregation and proliferation trends cyclical changes. It is proposed that the population density of wheat aphids is estimated from the rate of the bugs according to the formula λ = 1.7156 [-ln (1-p)] 1.0921, and the sequential sampling with the rate of pests to determine the degree of occurrence in the field is given Figure