TABLE 3.

Correlation between bacterial community structure and soil properties in 2018, 2019, and 2020

Soil physicochemical propertiesa	R	P value
2018
pH	0.0002	0.995
AN	0.2838	0.155
AP	0.2703	0.117
AK	0.2402	0.222
TN	0.0094	0.934
SOM	0.1781	0.349
2019
pH	0.7629	0.001b
AN	0.1424	0.409
AP	0.4919	0.021c
AK	0.3499	0.061
TN	0.5644	0.002b
SOM	0.4443	0.038c
2020
pH	0.1433	0.404
AN	0.1972	0.253
AP	0.6252	0.002b
AK	0.3602	0.06
TN	0.0871	0.61
SOM	0.0482	0.792

^aSoil physicochemical properties: TN, total nitrogen; SOM, soil organic matter; AN, available nitrogen; AP, available phosphorus; AK, available potassium.

^bSignificant differences at P < 0.01.

^cSignificant differences at P < 0.05.