Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (4): 678-687.DOI: 10.3969/j.issn.1004-1524.2021.04.13
• Environmental Science • Previous Articles Next Articles
WU Peicong1,2(
), ZHANG Peng2,3, SHAN Ying2, ZOU Ganghua2, DING Zheli4, ZHU Zhiqiang1,*(
), ZHAO Fengliang2,*(
)
Received:2020-12-23
Online:2021-04-25
Published:2021-04-25
Contact:
ZHU Zhiqiang,ZHAO Fengliang
CLC Number:
WU Peicong, ZHANG Peng, SHAN Ying, ZOU Ganghua, DING Zheli, ZHU Zhiqiang, ZHAO Fengliang. Effects of staw-derived biochar on ammonia volatilization in tropical soil-rice system[J]. Acta Agriculturae Zhejiangensis, 2021, 33(4): 678-687.
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| 处理 Treatment | 有机碳 SOC/ (g·kg-1) | 全氮 Total N/ (g·kg-1) | 全磷 Total P/ (g·kg-1) | 全钾 Total K/ (g·kg-1) | 速效磷 Available P/ (mg·kg-1) | 速效钾 Available K/ (mg·kg-1) | 阳离子交换量 CEC/ (cmol·kg-1) | pH |
|---|---|---|---|---|---|---|---|---|
| ON | 6.44 | 0.64 | 0.75 | 12.25 | 83.0 | 142.0 | 4.37 | 6.46 |
| CT | 7.31 | 0.77 | 0.82 | 12.06 | 94.6 | 136.2 | 3.36 | 5.41 |
| CST | 8.35 | 0.91 | 0.78 | 11.65 | 77.9 | 121.4 | 4.73 | 5.85 |
| CBI | 15.89 | 0.87 | 0.71 | 11.12 | 91.1 | 151.2 | 3.89 | 5.81 |
Table 1 Basic physical and chemical properties of soil
| 处理 Treatment | 有机碳 SOC/ (g·kg-1) | 全氮 Total N/ (g·kg-1) | 全磷 Total P/ (g·kg-1) | 全钾 Total K/ (g·kg-1) | 速效磷 Available P/ (mg·kg-1) | 速效钾 Available K/ (mg·kg-1) | 阳离子交换量 CEC/ (cmol·kg-1) | pH |
|---|---|---|---|---|---|---|---|---|
| ON | 6.44 | 0.64 | 0.75 | 12.25 | 83.0 | 142.0 | 4.37 | 6.46 |
| CT | 7.31 | 0.77 | 0.82 | 12.06 | 94.6 | 136.2 | 3.36 | 5.41 |
| CST | 8.35 | 0.91 | 0.78 | 11.65 | 77.9 | 121.4 | 4.73 | 5.85 |
| CBI | 15.89 | 0.87 | 0.71 | 11.12 | 91.1 | 151.2 | 3.89 | 5.81 |
Fig.2 Ammonia volatilization flux at different fertilization stages The arrows show the time when basal fertilizer, tiller fertilizer and panicle fertilizer was applied, respectively.The same as below.
| 处理 Treatment | 基肥期 Basal fertilizer stage | 分蘖肥期 Tiller fertilizer stage | 穗肥期 Panicle fertilizer stage | 全生长期 Whole growth period |
|---|---|---|---|---|
| BI | 18.20±0.36 Ac | 2.22±0.13 Be | 0.58±0.03 Cc | 21.00±0.52 e |
| ST | 18.18±0.32 Ac | 2.37±0.16 Bde | 0.89±0.03 Ca | 21.44±0.51 d |
| CBI | 20.36±0.28 Ab | 2.84±0.22 Bc | 0.69±0.09 Cbc | 23.89±0.59 c |
| CST | 22.33±0.3 Aa | 3.22±0.18 Bb | 0.60±0.16 Cc | 26.15±0.65 a |
| CT | 20.43±0.54 Ab | 3.66±0.31 Ba | 0.80±0.09 Cab | 24.90±0.94 b |
| ON | 20.36±0.29 Ab | 2.43±0.27 Bd | 0.77±0.11 Cab | 21.01±0.67 e |
Table 2 Dynamic change of accumulated ammonia volatilization under different treatments kg·hm-2·d-1
| 处理 Treatment | 基肥期 Basal fertilizer stage | 分蘖肥期 Tiller fertilizer stage | 穗肥期 Panicle fertilizer stage | 全生长期 Whole growth period |
|---|---|---|---|---|
| BI | 18.20±0.36 Ac | 2.22±0.13 Be | 0.58±0.03 Cc | 21.00±0.52 e |
| ST | 18.18±0.32 Ac | 2.37±0.16 Bde | 0.89±0.03 Ca | 21.44±0.51 d |
| CBI | 20.36±0.28 Ab | 2.84±0.22 Bc | 0.69±0.09 Cbc | 23.89±0.59 c |
| CST | 22.33±0.3 Aa | 3.22±0.18 Bb | 0.60±0.16 Cc | 26.15±0.65 a |
| CT | 20.43±0.54 Ab | 3.66±0.31 Ba | 0.80±0.09 Cab | 24.90±0.94 b |
| ON | 20.36±0.29 Ab | 2.43±0.27 Bd | 0.77±0.11 Cab | 21.01±0.67 e |
| 处理 Treatment | 基肥期 Basal fertilizer stage | 分蘖肥期 Tiller fertilizer stage | 穗肥期 Panicle fertilizer stage |
|---|---|---|---|
| BI | 6.72±0.08 b | 7.38±0.04 b | 7.23±0.07 a |
| ST | 7.18±0.11 a | 7.59±0.06 a | 7.38±0.05 a |
| CBI | 6.74±0.06 b | 6.92±0.06 c | 7.48±0.03 a |
| CST | 7.08±0.08 a | 7.51±0.05 ab | 7.44±0.04 a |
| CT | 6.62±0.09 bc | 6.88±0.08 c | 7.08±0.05 b |
| ON | 6.49±0.07 c | 7.01±0.04 c | 7.49±0.02 a |
Table 3 pH of surface water
| 处理 Treatment | 基肥期 Basal fertilizer stage | 分蘖肥期 Tiller fertilizer stage | 穗肥期 Panicle fertilizer stage |
|---|---|---|---|
| BI | 6.72±0.08 b | 7.38±0.04 b | 7.23±0.07 a |
| ST | 7.18±0.11 a | 7.59±0.06 a | 7.38±0.05 a |
| CBI | 6.74±0.06 b | 6.92±0.06 c | 7.48±0.03 a |
| CST | 7.08±0.08 a | 7.51±0.05 ab | 7.44±0.04 a |
| CT | 6.62±0.09 bc | 6.88±0.08 c | 7.08±0.05 b |
| ON | 6.49±0.07 c | 7.01±0.04 c | 7.49±0.02 a |
Fig.5 Changes of NH4+-N content in soil treated with different treatments Different lowercase letters indicated significant differences between different treatments in the same period. The same as below.
| 指标 Index | 氨挥发排放通量 Ammonia volatilization flux | 田面水pH pH of surface water | 田面水NH4+-N NH4+-N of surface water | 田面水NO3--N NO3--N of surface water | 土壤NH4+-N Soil NH4+-N |
|---|---|---|---|---|---|
| 田面水pH | -0.135* | ||||
| pH of surface water | |||||
| 田面水NH4+-N | 0.344** | -0.213** | |||
| NH4+-N of surface water | |||||
| 田面水NO3--N | 0.324** | -0.307** | 0.328** | ||
| NO3--N of surface water | |||||
| 土壤NH4+-N | 0.741** | -0.429* | 0.683** | 0.482** | |
| Soil NH4+-N | |||||
| 土壤NO3--N | 0.541** | -0.501** | 0.556** | 0.452** | 0.802** |
| Soil NO3--N |
Table 4 Correlation analysis between soil ammonia volatilization and physic-chemical indexes of soil and surface water
| 指标 Index | 氨挥发排放通量 Ammonia volatilization flux | 田面水pH pH of surface water | 田面水NH4+-N NH4+-N of surface water | 田面水NO3--N NO3--N of surface water | 土壤NH4+-N Soil NH4+-N |
|---|---|---|---|---|---|
| 田面水pH | -0.135* | ||||
| pH of surface water | |||||
| 田面水NH4+-N | 0.344** | -0.213** | |||
| NH4+-N of surface water | |||||
| 田面水NO3--N | 0.324** | -0.307** | 0.328** | ||
| NO3--N of surface water | |||||
| 土壤NH4+-N | 0.741** | -0.429* | 0.683** | 0.482** | |
| Soil NH4+-N | |||||
| 土壤NO3--N | 0.541** | -0.501** | 0.556** | 0.452** | 0.802** |
| Soil NO3--N |
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