Effects of Sheep Manure Combined with Chemical Fertilizers on Maize Yield and Quality and Spatial and Temporal Distribution of Soil Inorganic Nitrogen

Table 1

Basic physical and chemical status of the tested soil.

Treatment	pH	Organic matter (g/kg)	Available P (mg/kg)	Available K (mg/kg)	Total N (g/kg)	Total P (g/kg)	Total K (g/kg)	Bulk density (g/cm^3)
T1	8.33 ± 0.03c	16.83 ± 0.75d	4.71 ± 0.4e	152.47 ± 4.11c	1.27 ± 0.02c	0.57 ± 0.06c	13.73 ± 1c	1.46 ± 0.05a
T2	8.32 ± 0.06c	20.3 ± 0.46c	5.6 ± 0.25d	190.7 ± 4.35b	1.33 ± 0.03c	0.71 ± 0.01b	15.9 ± 0.47b	1.48 ± 0.01a
T3	8.35 ± 0.09c	20.7 ± 0.44bc	5.67 ± 0.1d	194.77 ± 2.09b	1.49 ± 0.06ab	0.79 ± 0.04ab	16.18 ± 0.18b	1.46 ± 0.02a
T4	8.39 ± 0.08bc	20.87 ± 0.25bc	7.68 ± 0.44c	195.6 ± 6.29b	1.43 ± 0.04b	0.8 ± 0.09ab	15.76 ± 0.66b	1.38 ± 0.01b
T5	8.47 ± 0.06ab	21.77 ± 0.85b	9.01 ± 0.39b	208.8 ± 5.99a	1.46 ± 0.04b	0.85 ± 0.06a	17.64 ± 0.59a	1.39 ± 0.03b
T6	8.52 ± 0.06a	27.3 ± 0.7a	12.1 ± 0.83a	217.97 ± 2.04a	1.53 ± 0.03a	0.88 ± 0.08a	18.62 ± 0.63a	1.35 ± 0.03b