Patterns of Nitrogen and Phosphorus along a Chronosequence of Tea Plantations in Subtropical China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Description of the Sample Site
2.2. Collection of Soil and Leaf Samples
2.3. Chemical Analysis of Soil Sample
2.4. Chemical Analysis of Leaf Sample
2.5. Statistical Analysis
3. Results
3.1. Pattern of Soil Nitrogen Concentration
3.2. Pattern of Soil Phosphorus Concentration
3.3. Pattern of Tea Leaf Nitrogen and Phosphorus Concentrations
3.4. Correlations between Soil and Leaf Nitrogen Concentrations
3.5. Correlations between Soil and Leaf Phosphorus Concentrations
4. Discussion
4.1. Patterns of Nitrogen in Soil and Leaves
4.2. Patterns of Phosphorus in Soil and Leaves
4.3. Soil Controls Leaf Nitrogen and Phosphorus Concentrations
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Soil Layer | TN of Young Leaf | TN of Mature Leaf | |||||
---|---|---|---|---|---|---|---|
n | r | p | n | r | p | ||
Topsoil (0–20 cm) | TN | 12 | 0.33 | =0.30 | 15 | −0.36 | =0.19 |
-N | 12 | −0.23 | =0.47 | 15 | 0.75 | <0.01 | |
-N | 12 | −0.38 | =0.23 | 15 | −0.39 | =0.15 | |
-N | 12 | −0.76 | <0.01 | 15 | 0.56 | =0.03 | |
DON | 12 | 0.55 | =0.06 | 15 | 0.40 | =0.14 | |
δ15N | 12 | −0.45 | =0.14 | 15 | 0.77 | <0.01 | |
Subsoil (20–40 cm) | TN | 12 | 0.07 | =0.84 | 15 | 0.58 | =0.02 |
-N | 12 | −0.01 | =0.98 | 15 | 0.89 | <0.001 | |
-N | 12 | −0.38 | =0.22 | 15 | 0.09 | =0.75 | |
-N | 12 | 0.03 | =0.93 | 15 | 0.20 | =0.47 | |
DON | 12 | 0.34 | =0.28 | 15 | 0.44 | =0.10 | |
δ15N | 12 | 0.01 | =0.99 | 15 | 0.72 | <0.01 |
Soil Layer | TP of Young Leaf | TP of Mature Leaf | |||||
---|---|---|---|---|---|---|---|
n | r | p | n | r | p | ||
Topsoil (0–20 cm) | TP | 12 | −0.49 | =0.11 | 15 | 0.89 | <0.001 |
AP | 12 | −0.67 | =0.02 | 15 | 0.88 | <0.001 | |
H2O-Pi | 12 | −0.38 | =0.22 | 15 | 0.74 | <0.01 | |
NaHCO3-Pi | 12 | −0.83 | <0.01 | 15 | 0.81 | <0.001 | |
NaHCO3-Po | 12 | 0.46 | =0.13 | 15 | 0.19 | =0.51 | |
NaOH-Pi | 12 | −0.31 | =0.33 | 15 | 0.82 | <0.001 | |
NaOH-Po | 12 | −0.45 | =0.14 | 15 | −0.20 | =0.48 | |
D.HCl-Pi | 12 | −0.71 | =0.01 | 15 | 0.70 | <0.01 | |
C.HCl-Pi | 12 | 0.13 | =0.68 | 15 | −0.22 | =0.42 | |
C.HCl-Po | 12 | 0.30 | =0.34 | 15 | −0.45 | =0.09 | |
Residual-Pt | 12 | 0.40 | =0.20 | 15 | −0.45 | =0.09 | |
Subsoil (20–40 cm) | TP | 12 | −0.47 | =0.12 | 15 | 0.51 | =0.05 |
AP | 12 | −0.74 | <0.01 | 15 | 0.89 | <0.001 | |
H2O-Pi | 12 | 0.49 | =0.11 | 15 | 0.44 | =0.10 | |
NaHCO3-Pi | 12 | −0.66 | =0.02 | 15 | 0.68 | <0.01 | |
NaHCO3-Po | 12 | 0.36 | =0.26 | 15 | 0.48 | =0.07 | |
NaOH-Pi | 12 | −0.74 | <0.01 | 15 | 0.81 | <0.001 | |
NaOH-Po | 12 | 0.36 | =0.24 | 15 | −0.11 | =0.68 | |
D.HCl-Pi | 12 | −0.61 | =0.04 | 15 | 0.25 | =0.38 | |
C.HCl-Pi | 12 | 0.22 | =0.48 | 15 | −0.35 | =0.20 | |
C.HCl-Po | 12 | 0.48 | =0.12 | 15 | −0.24 | =0.39 | |
Residual-Pt | 12 | 0.59 | =0.04 | 15 | −0.74 | <0.01 |
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Zou, S.; Huang, C.; Chen, Y.; Bai, X.; Li, W.; He, B. Patterns of Nitrogen and Phosphorus along a Chronosequence of Tea Plantations in Subtropical China. Agriculture 2024, 14, 110. https://doi.org/10.3390/agriculture14010110
Zou S, Huang C, Chen Y, Bai X, Li W, He B. Patterns of Nitrogen and Phosphorus along a Chronosequence of Tea Plantations in Subtropical China. Agriculture. 2024; 14(1):110. https://doi.org/10.3390/agriculture14010110
Chicago/Turabian StyleZou, Shun, Chumin Huang, Yang Chen, Xiaolong Bai, Wangjun Li, and Bin He. 2024. "Patterns of Nitrogen and Phosphorus along a Chronosequence of Tea Plantations in Subtropical China" Agriculture 14, no. 1: 110. https://doi.org/10.3390/agriculture14010110