Table 1. Basic physical and chemical properties of soil in the experimental site.

Site	pH	OC (g kg−1)	TN (g kg−1)	AN (mg kg−1)	AP (mg kg−1)	AK (mg kg−1)
Binyang	5.28	33.47	2.07	147	124.13	194
Beiliu	4.89	22.76	1.31	161	380.12	115
Liucheng	8.08	42.35	2.74	206.5	104.5	81

Note:

OC, organic carbon; TN, total nitrogen; AN, available nitrogen; AP, available phosphorous; AK, available potassium.