Table 1.
Actual values in the test area and soil environmental quality standards (national level II) (mg/kg).
Fig 1.
Dynamic change of soybean rhizosphere and non-rhizosphere soil in the mining reclamation area under fertilization treatments in rotation system.
CK, F, O, OF represent different fertilizer treatments; the first S represents soybean; the second S represents non-rhizosphere soil. Figure represents three repeats.
Fig 2.
Dynamic change of maize rhizosphere and non-rhizosphere soil in the mining reclamation area under different fertilization treatments under rotation system.
CK, F, O, OF represent different fertilizer treatments; the letter M represents maize; R represents rhizosphere soil; the letter S represents non-rhizosphere soil; Figure represents three repeats.
Table 2.
Microbiological diversity index of maize rhizosphere and non-rhizosphere under different fertilization treatment in industrial reclamation area.
Table 3.
Variation of the various carbon sources used in the non- rhizosphere soil under different fertilization treatments from 2017 to 2018.
Table 4.
Variation of the various carbon sources used in rhizosphere soil under different fertilization treatments from 2017 to 2018.
Fig 3.
PCA about soybean rhizosphere and non-rhizosphere soil carbon sources utilization under different fertilization treatment in 2017.
B1;C1;D1;E1;F1;G1;H1 represents respectively Methyl pyruvate; Twain 40; Twain 80; a-cyclodextrin; Glycogen; D-cellobiose; A-D-lactose.; A2;B2;C2;D2;E2;F2;G2;H2; represents respectively ß- Methyl D-Glucoside; D-xylose; I-gibberellin alcohol; D-mannitol; N-acetyl-D-glucosamine; D-glucosaminic acid; Glucose-1-phosphate; D, L-a-glycerol; A3;B3;C3;D3;E3;F3;G3;H3 represents respectively D-galactose gamma lactone; D-galacturonic acid; 2-hydroxybenzoic acid; 4-hydroxybenzoic acid; r -hydroxybutyric acid; Itaconic acid; a -butanoic acid; D-Malic Acid; A4;B4;C4;D4;E4;F4;G4;H4 represents respectively L-arginine; L-asparaginic acid; L-Phenylalanine; L–serine; L-threonine; Glycyl-L-glutamic acid; Phenylethylamine; Putrescine.
Fig 4.
Factor score of soybean rhizosphere and non-rhizosphere soil carbon sources utilization under different fertilization treatments in 2017.
CK, F, O, OF represent different fertilizer treatments; the first S represents soybean; the second S represents non-rhizosphere soil. Figure represents three repeats.
Fig 5.
PCA about maize rhizosphere and non-rhizosphere soil carbon sources utilization under different fertilization treatments in 2018.
B1;C1;D1;E1;F1;G1;H1 represents respectively Methyl pyruvate; Twain 40; Twain 80; a-cyclodextrin; Glycogen; D-cellobiose; A-D-lactose.; A2;B2;C2;D2;E2;F2;G2;H2; represents respectively ß- Methyl D-Glucoside; D-xylose; I-gibberellin alcohol; D-mannitol; N-acetyl-D-glucosamine; D-glucosaminic acid; Glucose-1-phosphate; D, L-a-glycerol; A3;B3;C3;D3;E3;F3;G3;H3 represents respectively D-galactose gamma lactone; D-galacturonic acid; 2-hydroxybenzoic acid; 4-hydroxybenzoic acid; r -hydroxybutyric acid; Itaconic acid; a -butanoic acid; D-Malic Acid; A4;B4;C4;D4;E4;F4;G4;H4 represents respectively L-arginine; L-asparaginic acid; L-Phenylalanine; L–serine; L-threonine; Glycyl-L-glutamic acid; Phenylethylamine; Putrescine.
Fig 6.
Factor score of maize rhizosphere and non-rhizosphere soil carbon sources utilization under different fertilization treatments in 2018.
CK, F, O, OF represent different fertilizer treatments; the letter M represents maize; R represents rhizosphere soil; the letter S represents non-rhizosphere soil; Figure represents three repeats.
Table 5.
Score value of comprehensive utilization of carbon source capacity in crop rhizosphere and non-rhizosphere under the crop rotation system from 2017 to 2018.
Fig 7.
CK, F, O, OF represent different fertilizer treatments; the first S represents soybean; the second S represents non-rhizosphere soil; Figure represents three repeats.
Fig 8.
CK, F, O, OF represent different fertilizer treatments; the letter M represents maize; R represents rhizosphere soil; the letter S represents non-rhizosphere soil; Figure represents three repeats.
Fig 9.
Landscape before reclamation in the researched area.
Fig 10.
Landscape after reclamation in the researched area.