Sampling method, sample storage, optimum chromatographic condition test have also been studied.
研究了采样方法、样品保存和最佳色谱条件等。
The optimum sampling number, the sequential sampling 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。
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