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【目的】确定黄斑长翅卷叶蛾幼虫空间分布型及理论抽样数,为预测预报及综合防治提供理论依据。【方法】采用Taylor幂法则I、wao线性回归及各种聚集度指标法分析了黄斑长翅卷叶蛾幼虫的空间分布型。【结果】黄斑长翅卷叶蛾幼虫在田间符合聚集分布,且个体间相互排斥。其种群聚集原因是由昆虫本身习性和环境共同引起的。根据Iwao最适抽样公式得出了理论抽样模型并计算出不同虫口密度下最适理论调查取样数量及序贯抽样模型。【结论】黄斑长翅卷叶蛾幼虫在田间呈聚集分布。
【Objective】 The objective of this study was to determine the spatial distribution pattern and theoretical sampling number of the larvae of Phalaenopsis macular plagues to provide a theoretical basis for forecasting and comprehensive prevention and treatment. 【Method】 The spatial distribution patterns of larvae of Phalaenopsis macularis were analyzed by Taylor’s power law I, wao linear regression and various degree of aggregation indices. 【Result】 The results showed that the larvae of Phalaenopsis maculata were clustered and distributed in the field, and the individuals were mutually exclusive. The reason for their clustering is caused by the common habit of insects and the environment. According to the Iwao optimum sampling formula, the theoretical sampling model is derived and the sampling numbers of the most appropriate theoretical sampling under different population density and the sequential sampling model are calculated. 【Conclusion】 The larvae of Phalaenopsis maculata aggregated in the field.