The optimum sampling number, the sequentialsampling application and the sampling method at different densities were determined based on the characteristics of the larva's distribution.
根据竹螟幼虫分布的特点，确定了不同密度下的最适抽样数、序贯抽样的应用和调查取样方法。
2
By introducing the idea of sequentialsampling, a method for testing correlation coefficients of meteorological variables is presented.