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[1]谢钧宇 焦欢 洪坚平 张杰 李丽娜 黄晓磊 栗丽 赵林婷 李廷亮**.施肥对复垦土壤中活性和难降解碳氮组分的影响*[J].应用与环境生物学报,2020,26(01):1-12.[doi:10.19675/j.cnki.1006-687x.2019.05032]
　XIE Junyu,JIAO Huan,HONG Jianping,et al.Effects of fertilization regimes on organic carbon and total nitrogen in labile and recalcitrant fractions in reclaimed soils*[J].Chinese Journal of Applied & Environmental Biology,2020,26(01):1-12.[doi:10.19675/j.cnki.1006-687x.2019.05032]
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施肥对复垦土壤中活性和难降解碳氮组分的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年01期
页码:
1-12
栏目:
研究论文
出版日期:
2020-02-25

文章信息/Info

Title:
Effects of fertilization regimes on organic carbon and total nitrogen in labile and recalcitrant fractions in reclaimed soils*
作者:
谢钧宇1; 2 焦欢1 洪坚平1 张杰1 李丽娜1 黄晓磊1 栗丽1 赵林婷3 李廷亮1**
1山西农业大学资源与环境学院 太谷 030801
2土壤环境与养分资源山西省重点实验室 太原 030031
3山西农业大学城乡建设学院 太谷 030801
Author(s):
XIE Junyu1; 2;  JIAO Huan1;  HONG Jianping1;  ZHANG Jie1;  LI Lina1;  HUANG Xiaolei1;  LI Li1;  ZHAO Linting3 & LI Tingliang1**
1 College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China
2 Shanxi Province Key Laboratory of Soil Environment and Nutrient Resources Taiyuan 030031, China
3 College of Urban and Rural Construction, Shanxi Agricultural University, Taigu 030801, China
关键词:
复垦土壤; 施肥措施; 活性有机碳; 难降解有机碳; 土壤有机碳阈值
Keywords:
reclaimed soil;  fertilization regimes;  labile organic carbon;  recalcitrant organic carbon;  SOC critical level
DOI:
10.19675/j.cnki.1006-687x.2019.05032
摘要:
研究复垦土壤中活性和难降解碳氮组分随复垦年限和施肥措施变化的特征，以期深入理解采煤塌陷区复垦土壤碳氮的稳定性机制。采集复垦4年和8年的定位试验各处理耕层（0-20 cm）土样，利用H2SO4水解法分析活性组分I、II和难降解组分中有机碳（SOC）、全氮（TN）的变化特征。试验设不施肥（CK）、平衡施氮磷钾肥（CF）、单施有机肥（M）、有机无机肥配施（MCF）和生物有机肥配施化肥（MCFB）5个处理。结果显示，复垦土壤及各组分中有机碳、全氮含量的变化趋势总体均表现为随复垦年限的增加而提高。复垦4年和8年，同CK相比，CF、M、MCF和MCFB处理均显著提高了SOC和TN含量，增幅分别达40.12%-89.97%（4年）、34.16%-71.65%（8年）和22.66%-60.06%、25.86%-37.93%，且以M处理增幅最大；M、MCF和MCFB处理均显著提高了活性组分II中碳氮含量，增幅分别为91.74%-141.22%、60.03%-88.27%和24.77%-51.15%、19.73%-66.67%；同CF相比，MCF和MCFB处理均显著提高了复垦8年土壤活性组分II中碳氮含量，增幅分别为22.94%-44.62%和41.22%-52.19%。当SOC、活性组分I、II中碳含量分别达到9.01、1.82和2.25 g/kg时，作物产量达到最大值。本研究表明当养分投入量相同时，单施有机肥更有利于采煤塌陷区复垦土壤及各组分碳氮的累积。另外，土壤有机碳投入水平以及时间还应根据上述阈值进行调整，从而满足土壤科学培肥的要求，达到较高的固碳效率。（图6表2参37）
Abstract:
Objectives: To deepen the understanding of the stabilization mechanism of soil organic carbon (SOC) and total nitrogen (TN), the variation characteristics of SOC and TN in labile and recalcitrant fractions in reclaimed soils along reclamation age and fertilization regimes were studied. Methods: Topsoil samples (0-20 cm) were collected from different treatments of a 4-year and an 8-year located experiment. The variation characteristics of SOC and TN in labile (I and II) and recalcitrant fractions were analyzed using sulfuric acid hydrolysis method. Five different fertilization treatments [no fertilizer (CK), chemical fertilizer with nitrogen, phosphatic and potassium (CF), organic manure alone (M), chemical fertilizer combined with manure (MCF), compound fertilizer of biological organic fertilizer and chemical fertilizer and manure (MCFB)] were set within each reclamation age. Results: The SOC and TN contents in bulk soil and each fraction all increased along reclamation age. Compared with CK, after 4 years and 8 years of reclamation, CF, M, MCF and MCFB treatments all significantly increased SOC and TN contents by 40.12%-89.97% (4 years), 34.16%-71.65% (8 years) and 22.66%-60.06%, 25.86%-37.93%, respectively, and the highest increment was in M treatment; M, MCF and MCF treatments markedly increased C and N contents in labile fraction II by 91.74%-141.22%, 60.03%-88.27% and 24.77%-51.15%, 19.73%-66.67%, respectively. Moreover, MCF and MCFB treatments markedly increased OC and TN contents in labile fraction II by 22.94%-44.62% and 41.22%-52.19% than CF after 8 years of reclamation, respectively. In addition, the threshold contents of SOC, labile fraction I and II for maximum crop yield were 9.01, 1.82 and 2.25 g/kg, respectively. Conclusions: In condition of same nutrients inputs, application of manure alone was more beneficial for the accumulation of SOC, TN and OC contents in all fractions. In addition, for the sake of scientific fertilization, the level and time of SOC input should be adjusted according to the above thresholds to achieve higher carbon sequestration efficiency.

相似文献/References:

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[4]谢钧宇,孟会生,焦欢,等.施肥对复垦土壤中活性和难降解碳氮组分的影响[J].应用与环境生物学报,2019,25(05):1113.[doi:10.19675/j.cnki.1006-687x.2019.05032]
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备注/Memo

备注/Memo:
收稿日期Received: 2019-05-21 接受日期 Accepted:2019-07-08
*国家自然科学基金（41807102）、土壤环境与养分资源山西省重点实验室开放基金资助项目（2019003）和山西省优秀博士来晋工作奖励项目（SXYBKY201805）资助
**通讯作者 Corresponding author (Email: litingliang021@126.com)
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更新日期/Last Update: 2019-07-30