County-Scale Spatial Variability of Macronutrient Availability Ratios in Paddy Soils

Table 2

Pearson’s correlation coefficients between macronutrient elements and other selected soil properties.

TN

AN

TP

AP

TK

AK

pH

SOM

CEC

AB

AZn

ACu

AFe

AMn

AS

N availability ratio

−0.374^∗∗

0.186^∗∗

−0.036

−0.038

−0.032

−0.117^∗∗

0.022

−0.135^∗∗

−0.025

−0.014

−0.088^∗

−0.102^∗∗

−0.049

−0.058

−0.099^∗

P availability ratio

0.196^∗∗

0.180^∗∗

−0.208^∗∗

0.755^∗∗

−0.096^∗

0.242^∗∗

−0.098^∗

0.219^∗∗

0.122^∗∗

−0.098^∗

0.218^∗∗

0.261^∗∗

0.266^∗∗

−0.023

0.193^∗∗

K availability ratio

0.255^∗∗

0.182^∗∗

0.065

0.332^∗∗

−0.039

0.901^∗∗

−0.047

0.236^∗∗

0.252^∗∗

−0.010

0.367^∗∗

0.226^∗∗

0.123^∗∗

0.053

0.064

TN

0.826^∗∗

0.063

0.298^∗∗

−0.297^∗∗

0.199^∗∗

−0.578^∗∗

0.877^∗∗

0.437^∗∗

−0.269^∗∗

0.305^∗∗

0.519^∗∗

0.473^∗∗

−0.090^∗

0.240^∗∗

AN

0.042

0.272^∗∗

−0.345^∗∗

0.118^∗∗

−0.629^∗∗

0.853^∗∗

0.459^∗∗

−0.320^∗∗

0.246^∗∗

0.484^∗∗

0.469^∗∗

−0.142^∗∗

0.200^∗∗

TP

0.004

0.017

0.080^∗

−0.024

0.055

0.025

0.016

0.043

0.023

0.029

0.017

0.030

AP

−0.122^∗∗

0.306^∗∗

−0.180^∗∗

0.295^∗∗

0.205^∗∗

−0.109^∗∗

0.200^∗∗

0.310^∗∗

0.244^∗∗

−0.044

0.188^∗∗

TK

0.268^∗∗

0.583^∗∗

−0.353^∗∗

−0.246^∗∗

0.487^∗∗

−0.154^∗∗

−0.303^∗∗

−0.260^∗∗

0.166^∗∗

−0.235^∗∗

AK

0.089^∗

0.169^∗∗

0.197^∗∗

0.097^∗

0.327^∗∗

0.161^∗∗

0.066

0.098^∗

0.002

^∗𝑃<0.05; ^∗∗𝑃<0.01.