不同采样时间对常规分析结果的比较试验

在对土壤样品的采集报道中,通常只考虑了土壤横向和纵向的不均一性,而忽视了土壤养分动态变化的时间性。本文通过在一茬作物不同时间内采样的分析比较研究表明,不同采样时间虽然对常规分析测定值会有一定的影响,但对大多数分析项目并不构成较大的采样误差。这对大量需要提前采集样品的分析提供了可能性,有利于生产上提早制定施肥配方。

Comparative Experiments about Routine Analysis Effected by Different Sampling Times

When collecting and reporting on a soil sample, it is common to only consider the soil's lateral and vertical non-homogeneity but to ignore the temporality of the soil's nutrient's dynamic change. By analyzing and comparing different samples of one crop collected at different times, this paper illustrates that different sampling times have some effect on measured values by routine analysis. For most analyzing items, however, it will not cause large sampling errors. This shows that it is possible to collect large samples in advance and to formulate fertilizer formula beforehand.