Table 3.

Inorganic fertilizer application amount and fertilizer partial productivity of different treatments.

Treatments	Application amount of inorganic fertilizer (kg/ha)			Partial productivity/(kg·kg−1)
	N	P2O5	K2O	N	P	K
CK	150	75	75	35.58 ± 1.14Cc	71.16 ± 2.27Cc	71.16 ± 2.27Cc
FO1	60	30	30	86.61 ± 4.05Aa	172.01 ± 8.05Aa	170.42 ± 7.97Aa
FO2	60	30	30	81.53 ± 4.78Aab	160.92 ± 9.43Aa	158.15 ± 9.26Ab
FO3	60	30	30	80.09 ± 3.69Bb	157.20 ± 7.24Bb	153.40 ± 7.07Bb

Different lowercase letters in the same column indicate differ significantly at the 0.05 level (P < 0.05), while different capital letters indicate differ extremely significantly at the 0.01 level (P < 0.01). CK, control; FO1, combination of 60% chemical fertilizer with organic manure of 150 kg/ha; FO2, combination of 60% chemical fertilizer with organic manure of 300 kg/ha; FO3, combination of 60% chemical fertilizer with organic manure of 450 kg/ha. TN, total nitrogen; AN, available nitrogen; AP, available phosphorus; SOM, soil organic matter.