Sampling strategy for mineral nitrogen in a greenhouse soil

被引：1
|
作者：
Salomez, Joost [1 ]
Hofman, Georges [1 ]
机构：
[1] Univ Ghent, Fac Biosci Engn, Dept Soil Management & Soil Care, B-9000 Ghent, Belgium
来源：
CEREAL RESEARCH COMMUNICATIONS | 2007年 / 35卷 / 02期
关键词：
D O I：
10.1556/CRC.35.2007.2.214
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The mineral N-content in greenhouse soils is characterized by a high spatial variability, indicated by high CV values. Using the classical formula, at least 15 borings are needed to obtain an estimation of the mean value with an acceptable degree of precision (d = 20%) and significance level (l = 0.2). However, doubling precision needs a fourfold increase in sample numbers, indicating the importance of sampling in Nmin-determinations.
引用
收藏
页码：1021 / 1024
页数：4
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