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《Agricultural Reseach In The Arid Areas》 2002-04
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Research on the spatial variability of soil water and salt and rational sampling number

YANG Guiyu1, CHENG Yaxin2(1.China Agricultural University, Beijing 100094, China; 2.Inner Mongolia Agricultural University, Huhhot, Imer Mongolia 010018, China)  
The research was conducted in Hetao irrigation area with two kinds of monitoring scale (h=100 m, h=25 m) reveal the spatial variability of soil water and salt in different sampling layers. The analysis results show that the variabilities do not comply with a common discipline between water and salt, either in same sampling condition or not. The variability of salt is higher than water. The variability is related with sampling number and sampling lag. Therefore, the designing of sampling system should be done in term of classic statistical analysis and spatial structure feature.\;
【CateGory Index】: S152.7
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