Journal of Cotton Research

Table 2 Effects of crop residue incorporation and K fertilization on soil WSOC/SOC ratio (%)

From: Comparative effects of crop residue incorporation and inorganic potassium fertilization on soil C and N characteristics and microbial activities in cotton field

Treatment	Nanjing				Dafeng
Treatment	SS	FS	BS	BOS	SS	FS	BS	BOS
Control	0.36 ± 0.02b	0.50 ± 0.02ab	0.58 ± 0.01c	0.35 ± 0.01c	0.32 ± 0.02c	0.50 ± 0.02ab	0.53 ± 0.02c	0.39 ± 0.02c
W0C1	0.39 ± 0.02b	0.47 ± 0.02bc	0.63 ± 0.03bc	0.37 ± 0.02c	0.35 ± 0.03bc	0.47 ± 0.02b	0.55 ± 0.02bc	0.42 ± 0.01bc
W1C0	0.38 ± 0.00b	0.49 ± 0.02b	0.65 ± 0.03b	0.43 ± 0.03b	0.36 ± 0.02b	0.47 ± 0.03b	0.60 ± 0.03b	0.45 ± 0.03b
W1C1	0.42 ± 0.01a	0.54 ± 0.03a	0.77 ± 0.03a	0.49 ± 0.02a	0.41 ± 0.02a	0.53 ± 0.02a	0.69 ± 0.04a	0.51 ± 0.02a
K150	0.37 ± 0.01b	0.46 ± 0.02bc	0.61 ± 0.04bc	0.37 ± 0.01c	0.33 ± 0.01bc	0.48 ± 0.03b	0.57 ± 0.02bc	0.42 ± 0.02bc
K300	0.37 ± 0.01b	0.44 ± 0.02c	0.62 ± 0.02bc	0.38 ± 0.02c	0.33 ± 0.02bc	0.47 ± 0.03b	0.56 ± 0.02bc	0.41 ± 0.02bc
F value	5.87**	6.27**	17.55**	19.60**	8.89**	3.12*	12.25**	13.56**

WSOC, water-soluble organic carbon content; SOC, soil organic carbon; SS, seedling stage; FS, flowering stage; BS, boll-setting stage; BOS, boll-opening stage. Control, neither crop residue nor K fertilizer; W1C0, 0.9 t·ha⁻¹ wheat straw incorporation alone, W0C1, 0.7 t·ha^− 1 cotton straw incorporation alone; W1C1, 0.9 t·ha^− 1 wheat straw incorporation + 0.7 t·ha^− 1 cotton straw incorporation; K150, 150 kg·ha^− 1of K₂O; K300, 300 kg·ha^− 1 of K₂O
F values and significance levels (**P < 0.01, *P < 0.05)

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ISSN: 2523-3254

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