The analysis results showed: the data of soil chemical characteristics accorded with normal probability distribution, and reasonable sampling numbers were given under certain precision and credible level.
传统统计学分析证明棉田土壤盐分、养分数据均符合正态分布,并按一定置信水平和精度的要求确定了田间合理取样数目;利用表征空间变异特征的半方差函数建立了土壤各化学特性的空间变异模型及参数,据此确定了土壤化学特性的相关域,并利用克立格法分析得到相应的等值线图。
参考来源 - 土壤化学特性空间变异性与棉花生长关系研究·2,447,543篇论文数据,部分数据来源于NoteExpress
The reasonable sampling numbers for soil organic matter, total N and total P were 24,34 and 10 respectively.
取样间距对合理取样数目具有一定的影响,合理取样数目分别为:有机质(24)、全氮(34)、全磷(10)。
The thesis chooses the reasonable sampling site according to the different distribution of Phragmite australis, and combing the simulation experiment.
本文根据芦苇在不同湿地生境的分布,合理选择采样点,做实验室模拟实验。
When on sale quantitative packing products are sampled and inspected, reasonable sampling amount is always necessary to be considered.
从市场上抽取定量包装的商品进行检测时,经常碰到的问题是如何合理地抽取被检测的商品数量。
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