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Table 1 Soil properties and wheat yield in different fertilization regimes

From: Chronic fertilization of 37 years alters the phylogenetic structure of soil arbuscular mycorrhizal fungi in Chinese Mollisols

Treatment pH AP, g kg−1 AK, g kg−1 TN, g kg−1 NH4+-N, mg kg−1 NO3-N, mg kg−1 OM, g kg−1 Yield, kg ha−1
CK 6.81 ± 0.01 c 10.36 ± 2.73 a 127.22 ± 6.91 a 1.41 ± 0.03 a 15.87 ± 2.46 a 0.93 ± 0.34 ab 28.14 ± 0.28 a 1546.4 ± 96.4 a
M 6.84 ± 0.09 c 20.28 ± 5.45 b 143.74 ± 8.25 ab 1.42 ± 0.05 ab 13.08 ± 2.10 a 1.04 ± 0.20 ab 29.49 ± 0.35 b 2927.9 ± 437.9 b
NPK 6.07 ± 0.06 a 76.08 ± 3.94 c 148.40 ± 3.54 b 1.52 ± 0.05 b 15.70 ± 2.15 a 0.50 ± 0.05 a 29.25 ± 0.46 ab 3938.3 ± 238.3 c
MNPK 6.26 ± 0.06 b 79.83 ± 3.64 c 153.80 ± 10.22 b 1.44 ± 0.02 ab 13.97 ± 0.99 a 1.15 ± 0.22 b 28.48 ± 0.80 ab 4104.9 ± 214.9 c
  1. Values are means ± standard deviations (n = 3). Values within the same column followed by different letters indicate significant differences (P < 0.05) according to Tukey’s multiple comparison
  2. Treatment: CK, no fertilizer; M, manure; NPK, chemical nitrogen, phosphorus and potassium fertilizer; MNPK, chemical nitrogen, phosphorus and potassium fertilizer plus manure
  3. Soil properties: AP, available P; AK, available K; TN, total nitrogen; NH4+, ammonium nitrogen; NO3-N, nitrate nitrogen; OM, organic matter