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Preliminary Study on Spatial Variability of NO-3-N Content in Soil
Author(s): 
Pages: 5-9
Year: Issue:  4
Journal: IRRIGATION AND DRAINAGE

Keyword:  空间变异NO-3-N含量;
Abstract: 对具有代表性的3个地块的土壤NO-3-N含量实测资料进行了分析,结果表明田间土壤NO-3-N含量存在明显的空间变异性.3个地块的土壤NO-3-N含量在置信水平β=0.05下均服从正态分布.由实测资料进行的自相关及半方差分析表明,3个地块的土壤NO-3-N含量自相关性不显著,且无规律性,因此在田间一般距离取样的土壤NO-3-N含量可作为独立的随机变量.并将NO-3-N含量的空间变异性同土壤含水率及含盐量的空间变异性作了一些对比.
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