期刊论文

中文

湖南农业科学

1006-060X

2011

11

73-75

10.3969/j.issn.1006-060X.2011.11.022

湖南省测土配方施肥补贴项目；

本校为第一机构

利用反距离加权法(IDW)、局部多项式(LPI)、克里格插值法(Kriging)对湖南省邵阳县水稻土的3种主要亚类共6 051个样点的有机质、碱解氮、有效磷、速效钾4种土壤养分进行空间预测精度研究.结果表明:淹育性水稻土有机质、潜育性水稻土有效磷采用局部多项式整体插值效果相对更好,而淹育性水稻土的碱解氮、有效磷、速效钾,潜育性水稻土的有机质、碱解氮、速效钾和潴育性水稻上的有机质、碱解氮、有效磷、速效钾等土壤养分均以克里格插值法整体效果相对更好.

The precision of spatial prediction for four kinds of soil nutrient（organic matter,available N,available P and available K） from 6 051 samples,which belonged to three main subclasses of paddy soil in Shaoyang County of Hunan Province were studied by using inverse distance weight（IDW）,local polynomial interpolation（LPI） and Kriging interpolation（Kriging）.The results showed that using LPI to study the precision of spatial prediction of organic matter in submergenic paddy soil and available P in gleyed paddy soil had relatively greater eff...