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Table 4 Effects of crop residue incorporation and K fertilization on soil WIN/TN ratio (%)

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

TreatmentNanjingDafeng
SSFSBSBOSSSFSBSBOS
Control2.58 ± 0.14a6.22 ± 0.36a4.93 ± 0.15a3.65 ± 0.15a2.90 ± 0.16a5.49 ± 0.22a4.82 ± 0.23a3.89 ± 0.14a
W0C12.24 ± 0.10bc5.88 ± 0.27a4.82 ± 0.21a3.47 ± 0.23a2.56 ± 0.15b5.39 ± 0.21a4.66 ± 0.22ab3.72 ± 0.15a
W1C02.41 ± 0.17ab5.09 ± 0.21b4.24 ± 0.18b3.03 ± 0.11b2.57 ± 0.13b4.72 ± 0.17b4.06 ± 0.17c3.31 ± 0.10b
W1C12.02 ± 0.12c4.75 ± 0.25b4.03 ± 0.18b2.89 ± 0.12b2.30 ± 0.09c4.35 ± 0.22b3.96 ± 0.18c3.35 ± 0.15b
K1502.40 ± 0.16ab5.95 ± 0.34a4.93 ± 0.29a3.63 ± 0.18a2.61 ± 0.05b5.39 ± 0.29a4.45 ± 0.21b3.76 ± 0.21a
K3002.28 ± 0.13bc6.32 ± 0.24a4.94 ± 0.17a3.78 ± 0.18a2.71 ± 0.18ab5.50 ± 0.30a4.59 ± 0.13ab3.83 ± 0.11a
F value5.25**15.17**11.84**13.94**6.55**12.24**9.51**8.60**
  1. WIN, water inorganic nitrogen; TN, total nitrogen; SS, seedling stage; FS, flowering stage; BS, boll-setting stage; BOS, boll-opening stage. Different treatments are defined in the Table 2. SS = Seedling stage, FS=Flowering stage, BS=Boll-setting stage, BOS=Boll-opening stage
  2. F values and significance levels (**P < 0.01)