TABLE 3.

Richness and diversity indices of soil bacterial and fungal communities in the bulk and rhizosphere soils of soybean.

	Treatments	Bacteria					Fungi
		Clean reads	OTUs	Chao1	ACE	Shannon	Clean reads	OTUs	Chao1	ACE	Shannon
Bulk	CK	112,486 ± 4,206	4,744 ± 140a	7,053 ± 152a	7,050 ± 133a	7.01 ± 0.08a	175,749 ± 52,675	508 ± 21b	1,040 ± 72b	1,048 ± 78b	3.60 ± 0.22b
	CS	113,789 ± 16,242	4,731 ± 110a	6,982 ± 154a	6,930 ± 117a	7.04 ± 0.11a	139,701 ± 4,314	543 ± 22ab	1,048 ± 24b	1,056 ± 32b	3.79 ± 0.16ab
	LB	110,023 ± 8,862	4,737 ± 74a	6,849 ± 69a	6,855 ± 93a	7.03 ± 0.05a	197,950 ± 55,617	585 ± 26a	1,298 ± 21a	1,303 ± 41a	4.16 ± 0.12a
	HB	107,440 ± 1,395	4,753 ± 106a	6,836 ± 171a	6,842 ± 157a	7.06 ± 0.06a	173,713 ± 34,402	575 ± 20ab	1,170 ± 39ab	1,163 ± 63ab	4.09 ± 0.12a
	BCF	89,193 ± 14,051	4,764 ± 43a	6,981 ± 52a	6,968 ± 69a	7.05 ± 0.02a	165,003 ± 39,064	526 ± 36ab	1,070 ± 80b	1,068 ± 86b	3.87 ± 0.19ab
Rhizosphere	CK	104,753 ± 5,742	4,547 ± 249A	6,736 ± 378A	6,756 ± 370A	6.96 ± 0.28A	155,245 ± 31,684	479 ± 25A	960 ± 65B	929 ± 44B	3.50 ± 0.15B
	CS	96,482 ± 11,357	4,606 ± 68A	6,798 ± 49A	67,829 ± 58A	7.06 ± 0.06A	115,689 ± 10,245	495 ± 25A	1,029 ± 89AB	1,039 ± 90AB	3.46 ± 0.22B
	LB	105,437 ± 8,537	4,428 ± 57A	6,589 ± 213A	6,552 ± 161A	6.83 ± 0.15A	168,532 ± 36,789	512 ± 22A	1,192 ± 94A	1,171 ± 106A	3.94 ± 0.09A
	HB	97743 ± 4385	4,515 ± 176A	6,604 ± 264A	6,587 ± 238A	7.01 ± 0.12A	147,589 ± 23,467	492 ± 35A	1,072 ± 48AB	1,055 ± 70AB	3.75 ± 0.08AB
	BCF	82,253 ± 18,051	4,577 ± 193A	6,785 ± 62A	6,739 ± 43A	7.06 ± 0.02A	149,234 ± 30,368	479 ± 38A	1,007 ± 92AB	1,008 ± 99AB	3.39 ± 0.15B

Different letters within the same column indicate significant differences among the treatments at p < 0.05, lowercase letters for the bulk soil and uppercase letters for the rhizosphere. CK, control; CS, wheat straw addition; LB, low biochar addition; HB, high biochar addition; BCF, biochar compound fertilizer.