. 2018 Jan 12;8:695. doi: 10.1038/s41598-017-18997-1

Table 1.

Treatment effects on the average soil pore numbers, soil porosity and circularity in the topsoil (0–13 cm).

Treatments	Pore numbers			Porosity (%)			Circularity
Treatments	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore	>0.13 mm pore	>1.0 mm pore	0.13–1.0 mm pore
Control	17^d	7^d	10^d	4.9^d	4.7^d	0.3^b	0.66^c	0.45^c	0.82^b
SM + OM	55^a	22^a	33^a	11.1^b	8.4^b	2.7^a	0.76^a	0.61^a	0.92^a
SAP + OM	41^b	17^b	24^b	15.3^a	14.5^a	0.7^b	0.73^ab	0.56^ab	0.90^a
SAP + SM	24^c	10^c	14^c	7.1^c	5.5^c	0.3^b	0.71^b	0.52^b	0.91^a

Mean values labelled with the different letters represent significant differences at P < 0.05. Control = CK; SAP + OM = super absorbent polymer + organic manure; SAP + SM = superabsorbent polymer + straw mulch; SM + OM = straw mulch + organic manure.