Effects of Plastic Film Mulching and Fertilization on the Sequestration of Carbon and Nitrogen from Straw in Soil
WANG ShuYing,, LI XiaoHong, CHENG Na, FU ShiFeng, LI ShuangYi, SUN LiangJie, AN TingTing,, WANG JingKuanCollege of Land and Environment, Shenyang Agricultural University/ Key Laboratory of Northeast Arable Land Conservation, Ministry of Agriculture and Rural Affair/National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866
Abstract 【Objective】Crop straws not only contain high content of organic carbon (C), but also are rich in mineral nutrients. Straw returning to field is an important technique for improvement of soil fertility and sustainable development of agriculture in the region of Black Soil in Northeast China. However, the sequestration and characteristics of C and nitrogen (N) from straw in soil under different plastic film mulching and fertilization treatments were not clear. In this study, the contributions of straw C to soil organic C (SOC) and straw N to soil total nitrogen (TN) were quantified to compare the differences of straw C and N in soil among different mulching and fertilization treatments, so as to provide a basis for improvement of soil fertility and protection of Black Soil in Northeast China.【Method】Based on a long-term mulching and fertilization experiment, the 13C15N double-labeled straw was added to the topsoil (0-20 cm) from the different fertilization treatments, including no fertilization (CK), chemical N fertilizer application (N4), and organic manure combined with chemical N fertilizer (M2N2), with/without mulching, and then which were incubated in-situ in the field for 150 days. The contents of SOC and TN and the values of δ13C and δ 15N were measured to analyze the dynamics changes of SOC derived from straw C (13C-SOC), TN derived from straw N (15N-TN) and their ratio with time.【Result】Fertilization, mulching and their interactions significantly influenced the contents of 13C-SOC and 15N-TN (P<0.05). During the whole incubation period, the contribution percentage of13C-SOC to SOC (13C-SOC/SOC) and that of 15N-TN to TN (15N-TN/TN) were 10.48% and 3.18% under M2N2 treatment, respectively; the13C-SOC/SOC and residual percentage of straw C in soil under fertilization (N4 and M2N2) treatments were on average 12.65% and 37.14% under mulching, and averaged 12.08% and 34.50% under no mulching, respectively. On the 150th day of incubation under the same cultivation mode, the 13C-SOC/SOC and residual percentage of straw C in soil were on average 14.33% and 39.40% under N4 treatment and averaged 11.77% and 33.21% in the other fertilization treatments, respectively;15N-TN/TN under CK treatment was with an average of 4.56%, and was 26.00% and 44.53% higher than that in N4 and M2N2 treatments. The residual percentage of straw N was the highest under CK treatment with/without mulching, with an average of 10.03%, which was the lowest under N4 treatment without mulching, with a value of 7.87% on the 150th day of incubation. Regardless of mulching or not, the ratio of 13C-SOC to 15N-TN ranged from 32 to 39 in N4 treatment, but was lower than 30 in the other fertilization treatments. 【Conclusion】The sequestrations of straw C and N in soil were sensitive to mulching and fertilization. The single application of chemical N fertilizer promoted the accumulation of straw C and the renewal of organic C in soil, and the long-term no fertilization played a positive feedback effect on the sequestration of straw N in soil N pool, while the renewal of soil organic C and N in organic manure combined with chemical N fertilizer lagged behind that in the other fertilization treatments. Keywords：13C15N double-labeling;straw carbon;straw nitrogen;plastic film mulching;fertilization
PDF (618KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 王淑颖, 李小红, 程娜, 付时丰, 李双异, 孙良杰, 安婷婷, 汪景宽. 地膜覆盖与施肥对秸秆碳氮在土壤中固存的影响[J]. 中国农业科学, 2021, 54(2): 345-356 doi:10.3864/j.issn.0578-1752.2021.02.010 WANG ShuYing, LI XiaoHong, CHENG Na, FU ShiFeng, LI ShuangYi, SUN LiangJie, AN TingTing, WANG JingKuan. Effects of Plastic Film Mulching and Fertilization on the Sequestration of Carbon and Nitrogen from Straw in Soil[J]. Scientia Acricultura Sinica, 2021, 54(2): 345-356 doi:10.3864/j.issn.0578-1752.2021.02.010
Table 1 表1 表1不同处理土壤（0—20 cm）基本性质（2019年） Table 1Basic soil properties at 0-20 cm depth in various treatments (in 2019)
栽培模式 Cultivation mode
施肥处理 Fertilization treatment
土壤总有机碳 Total soil organic carbon (g·kg-1)
δ13C值 δ13C value (‰)
全氮 Total nitrogen (g· kg-1)
δ15N值 δ15N value (‰)
碳氮比 C/N ratio
不覆膜 No mulching
CK
8.78±0.05 e
-18.04±0.02 a
1.05±0.02 cd
5.68±0.03 c
8.37±0.11 c
N4
8.52±0.01 f
-18.10±0.03 a
1.06±0.02 cd
4.04±0.02 e
8.00±0.17 d
M2N2
13.11±0.02 a
-19.65±0.02 e
1.49±0.04 a
6.94±0.04 b
8.80±0.20 b
覆膜 Mulching
CK
9.16±0.03 d
-18.26±0.04 b
1.03±0.02 d
5.62±0.01 c
8.88±0.15 b
N4
10.57±0.03 c
-19.20±0.03 d
1.11±0.02 c
5.13±0.02 d
9.54±0.10 a
M2N2
12.75±0.04 b
-19.12±0.04 c
1.42±0.02 b
14.26±0.05 a
8.96±0.10 b
CK、N4和M2N2分别代表不施肥、单施氮肥和有机肥配施氮肥处理。数据后的不同小写字母表示不同施肥处理间的差异显著（P<0.05） CK, N4 and M2N2 denote no fertilizer, chemical nitrogen fertilizer, and organic manure combined with nitrogen fertilizer, respectively. Different lowercase letters show the significant differences (P<0.05) among different fertilization treatments
在培养后的第30天（2019年6月15日）和150天（2019年9月27日）分别从每个处理随机取出3个尼龙网袋,样品自然风干后研磨过筛,供分析土壤样品总有机碳、全氮含量及其δ13C和δ15N值。δ13C值以美国南卡罗来纳州白垩纪皮狄组层位中的拟箭石化石（Pee DeeBelemnite,PDB）为标准物质,δ15N值以纯净大气氮为标准物质,采用元素分析仪-稳定同位素比例质谱联用仪（EA-IRMS,Elementar vario PYRO cube-IsoPrime100 Isotope Ratio Mass Spectrometer,德国）测定。
Table 2 表2 表2栽培模式、施肥和时间对土壤中秸秆碳氮固定影响的方差分析 Table 2Analysis of variance for the effects of cultivation mode, fertilization and time on the straw carbon and nitrogen sequestration in soil
因子 Factor
自由度 Degree of freedom
δ13C F(P)
SOC F(P)
13C-SOC F(P)
Fmc F(P)
Rmc F(P)
δ15N F(P)
TN F(P)
15N-TN F(P)
Fmn F(P)
Rmn F(P)
SOC/TN F(P)
13C-SOC/15N-TN F(P)
施肥 Fertilization (F)
2
720 (<0.001)
655 (<0.001)
158 (<0.001)
690 (<0.001)
158 (<0.001)
1111 (<0.001)
481.0 (<0.001)
250.0 (<0.001)
1120 (<0.001)
247.9 (<0.001)
31.7 (<0.001)
125 (<0.001)
时间 Time (T)
1
124 (<0.001)
2.96 (0.098)
96.7 (<0.001)
122 (<0.001)
96.7 (<0.001)
112.0 (<0.001)
0.310 (0.583)
83.20 (<0.001)
111.7 (<0.001)
83.01 (<0.001)
0.45 (0.509)
0.01 (0.926)
栽培模式 Cultivation mode (C)
1
0.22 (0.644)
13.6 (0.001)
6.65 (0.016)
0.06 (0.812)
6.65 (0.016)
58.46 (<0.001)
1.005 (0.326)
33.77 (<0.001)
57.72 (<0.001)
33.55 (<0.001)
10.8 (0.003)
10.5 (0.003)
施肥×时间 F×T
2
126 (<0.001)
23.1 (<0.001)
129 (<0.001)
135 (<0.001)
129 (<0.001)
60.02 (<0.001)
15.34 (<0.001)
54.64 (<0.001)
60.93 (<0.001)
54.19 (<0.001)
9.95 (0.001)
23.9 (<0.001)
施肥×栽培模式 F×C
2
24.5 (<0.001)
30.8 (<0.001)
25.4 (<0.001)
29.7 (<0.001)
25.4 (<0.001)
22.81 (<0.001)
4.051 (0.030)
20.02 (<0.001)
22.62 (<0.001)
20.16 (<0.001)
19.1 (<0.001)
1.10 (0.348)
栽培模式×时间 C×T
1
3.51 (0.073)
1.18 (0.289)
1.52 (0.230)
5.34 (0.0300)
1.52 (0.230)
7.162 (0.013)
60.19 (<0.001)
10.07 (0.004)
7.792 (0.010)
10.05 (0.004)
39.1 (<0.001)
16.6 (<0.001)
施肥×栽培模式×时间 F×C×T
2
5.10 (0.014)
4.50 (0.022)
3.99 (0.032)
3.89 (0.034)
3.98 (0.032)
8.208 (0.002)
12.71 (<0.001)
3.823 (0.036)
8.052 (0.002)
3.878 (0.035)
7.68 (0.003)
3.97 (0.032)
施肥：不施肥、单施氮肥和有机肥配施氮肥;栽培模式：覆膜与不覆膜;时间：第30天和第150天;δ13C：土壤总有机碳δ13C值;SOC：土壤总有机碳;13C-SOC：土壤总有机碳中秸秆碳含量;Fmc：秸秆碳对总有机碳的贡献率;Rmc：土壤中秸秆碳的残留率。δ15N：土壤全氮δ15N值;TN：土壤全氮;15N-TN：土壤全氮中秸秆氮含量;Fmn：秸秆氮对土壤全氮的贡献率;Rmn：土壤中秸秆氮的残留率。SOC/TN：土壤有机碳与土壤全氮的比值;13C-SOC/15N-TN：土壤总有机碳中秸秆碳含量与土壤全氮中秸秆氮含量的比值 Fertilization: No fertilizer, chemical nitrogen fertilizer, and organic manure combined with chemical nitrogen fertilizer; Cultivation mode: Mulching and no-mulching; Time: 30 d and 150 d; δ13C: The δ13C value of soil organic carbon; SOC: Total soil organic carbon; 13C-SOC: Soil organic carbon derived from straw carbon; Fmc: Contribution percentage of straw carbon to total soil organic carbon; Rmc: Residue percentage of straw carbon in soil. δ15N: The δ15N value of total nitrogen; TN: Soil total nitrogen; 15N-TN: total nitrogen derived from straw nitrogen; Fmn: Contribution percentage of straw nitrogen to total nitrogen; Rmn: Residue percentage of straw nitrogen in soil. SOC/TN: Ratio of total soil organic carbon to total nitrogen; 13C-SOC/15N-TN: Ratio of soil organic carbon derived from straw carbon to total nitrogen derived from straw nitrogen
CK、N4和M2N2分别代表不施肥、单施氮肥和有机肥配施氮肥;不同大写字母表示培养第30天不同处理之间的差异显著（P<0.05）;不同小写字母表示培养第150天不同处理之间的差异显著（P<0.05）;*表示相同处理不同培养时间之间的差异显著（P<0.05）。下同 Fig. 1δ13C value of total organic carbon (a) and δ15N value of total nitrogen (b) in soil added with 13C15N-labeled straw under different mulching and fertilization treatments
CK, N4 and M2N2 denote no fertilizer, chemical nitrogen fertilizer, and organic manure combined with chemical nitrogen fertilizer, respectively. Different capital letters show significant differences (P<0.05) among different treatments on the 30th day of incubation; Different lowercase letters show significant differences (P<0.05) among different treatments on the 150th day of incubation; *Show the significant differences (P<0.05) between different incubation time in the same treatment. The same as below
Fig. 2Contents of total organic carbon (a) and total nitrogen (b) in soil added with 13C15N-labeled straw under different mulching and fertilization treatments
Table 3 表3 表3不同覆膜及施肥处理秸秆碳对土壤总有机碳和秸秆氮对土壤全氮的贡献率 Table 3Contribution percentage of straw carbon to total soil organic carbon and straw nitrogen to soil total nitrogen under different mulching and fertilization treatments
栽培模式 Cultivation mode
施肥处理 Fertilization treatment
秸秆碳的贡献率 Contribution percentage of straw carbon to total soil organic carbon (%)
秸秆氮的贡献率 Contribution percentage of straw nitrogen to total nitrogen (%)
Fig. 4The percentage of soil organic carbon (SOC) to total nitrogen (TN) (a) and the percentage of straw derived-SOC (13C-SOC) to straw derived-TN (15N-TN) (b) in soil added with 13C15N-labeled straw under different mulching and fertilization treatments
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SCHIPPER LA, SPARLING GP. Accumulation of soil organic C and change in C:N ratio after establishment of pastures on reverted scrubland in New Zealand Biogeochemistry, 2011,104, 49-58. DOI: 10.1007/s10533-009-9367-z. URL [本文引用: 1]
LALR. Soil carbon sequestration impacts on global climate change and food security Science, 2004,304, 1623-1627. DOI:10.1126/science.1097396URLPMID:15192216 [本文引用: 1] The carbon sink capacity of the world's agricultural and degraded soils is 50 to 66% of the historic carbon loss of 42 to 78 gigatons of carbon. The rate of soil organic carbon sequestration with adoption of recommended technologies depends on soil texture and structure, rainfall, temperature, farming system, and soil management. Strategies to increase the soil carbon pool include soil restoration and woodland regeneration, no-till farming, cover crops, nutrient management, manuring and sludge application, improved grazing, water conservation and harvesting, efficient irrigation, agroforestry practices, and growing energy crops on spare lands. An increase of 1 ton of soil carbon pool of degraded cropland soils may increase crop yield by 20 to 40 kilograms per hectare (kg/ha) for wheat, 10 to 20 kg/ha for maize, and 0.5 to 1 kg/ha for cowpeas. As well as enhancing food security, carbon sequestration has the potential to offset fossil fuel emissions by 0.4 to 1.2 gigatons of carbon per year, or 5 to 15% of the global fossil-fuel emissions.
CHENL, YANG XG, ZHAI DP, SONG NP, YANG MX, HOUJ. Effects of mulching with Caragana powder and plastic film on soil water and maize yield Transactions of the Chinese Society of Agricultural Engineering, 2015,31(2):108-116. DOI: 10.3969/j.issn. 1002-6819.2015.02.016. (in Chinese) URL [本文引用: 1]
HAIL, LI XG, LIU XE, JIANG XJ, GUO RY, JING GB, RENGELZ, LI FM. Plastic mulch increase soil nitrogen mineralization in a semiarid environment Agronomy Journal, 2015,107:921-930. DOI: 10.2134/agronj14.0538. DOI:10.2134/agronj14.0538URL [本文引用: 1]
ZHANG HY, LIU QJ, YU XX, LUG, WU YZ. Effects of plastic mulch duration on nitrogen mineralization and leaching in peanut (Arachis hypogaea) cultivated land in the Yimeng Mountainous Area, China. Agriculture, Ecosystems and Environment, 2012,158:164-171. DOI: 10.1016/j.agee.2012.06.009. DOI:10.1016/j.agee.2012.06.009URL [本文引用: 1]
GUO JH, LIU XJ, ZHANGY, SHEN JL, HAN WX, ZHANG WF, CHRISTIEP, GOULDINGK W T, VITOUSEKP M, ZHANGF S. Significant acidification in major Chinese croplands Science, 2010,327(5968):1008-10. DOI: 10.1126/science.1182570. DOI:10.1126/science.1182570URLPMID:20150447 [本文引用: 1] Soil acidification is a major problem in soils of intensive Chinese agricultural systems. We used two nationwide surveys, paired comparisons in numerous individual sites, and several long-term monitoring-field data sets to evaluate changes in soil acidity. Soil pH declined significantly (P < 0.001) from the 1980s to the 2000s in the major Chinese crop-production areas. Processes related to nitrogen cycling released 20 to 221 kilomoles of hydrogen ion (H+) per hectare per year, and base cations uptake contributed a further 15 to 20 kilomoles of H+ per hectare per year to soil acidification in four widespread cropping systems. In comparison, acid deposition (0.4 to 2.0 kilomoles of H+ per hectare per year) made a small contribution to the acidification of agricultural soils across China.
SHEN XL, HUANG SG, WANGJ, LINGL, LI SQ, LI FM. Effects of plastic film mulching models and nitrogen fertilizer on wheat yield and nitrogen efficiency Journal of Northwest A & F University (Natural Science Edition), 2003,31(1):1-13. DOI: 10.13207/j.cnki.jnwafu.2003.01.002. (in Chinese) URL [本文引用: 1]
WANG JK, ZHANG XD, ZHANG JH, XU XC, FAN DM, ZHU FC. Effects of covering with plastic film on decomposition of organic materials and characteristics of soil organic matter Plant Nutrition and Fertilizer Science, 1995,1(3-4):22-28. (in Chinese) [本文引用: 1]
Lǘ DQ, ZHANG SL, YANG XY. Effect of supplying C and N on the mineralization, immobilization and priming effect of soil nitrogen Plant Nutrition and Fertilizer Science, 2007,13(2):223-229. (in Chinese) URL [本文引用: 1]
,, 李小红, 程娜, 付时丰, 李双异, 孙良杰, 安婷婷
新窗口打开|下载原图ZIP|生成PPT
新窗口打开|下载原图ZIP|生成PPT
新窗口打开|下载原图ZIP|生成PPT
新窗口打开|下载原图ZIP|生成PPT
