Effect of Different Long-term Fertilization Practices on Carbon Sequestration in Black Soil

HAO Xiaoyu1; 2; 3; 4; MA Xingzhu2; 3; 4; ZHOU Baoku2; 3; 4

doi:10.13870/j.cnki.stbcxb.2016.05.052

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Effect of Different Long-term Fertilization Practices on Carbon Sequestration in Black Soil

更新时间：2025-03-12

- Effect of Different Long-term Fertilization Practices on Carbon Sequestration in Black Soil
- Vol. 30, Issue 5, Pages: 316-321(2016)
- 作者机构：
  
  1. 黑龙江省农业科学院博士后科研工作站,哈尔滨,150086
  2. 黑龙江省农业科学院土壤肥料与环境资源研究所,哈尔滨,150086
  3. 黑龙江省土壤环境与植物营养重点实验室,哈尔滨,150086
  4. 黑龙江省肥料工程技术研究中心,哈尔滨,150086
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2016.05.052
  CLC： S153.6
- Published：2016
- 稿件说明：
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HAO Xiaoyu1, 2, 3, et al. Effect of Different Long-term Fertilization Practices on Carbon Sequestration in Black Soil[J]. 2016, 30(5): 316-321.
DOI：

HAO Xiaoyu1, 2, 3, et al. Effect of Different Long-term Fertilization Practices on Carbon Sequestration in Black Soil[J]. 2016, 30(5): 316-321. DOI： 10.13870/j.cnki.stbcxb.2016.05.052.

摘要

利用开始于1979年的黑土长期定位试验，研究长期不同施肥措施下土壤有机碳含量演变特征、固碳效应及外源碳输入对土壤固碳的贡献。结果表明：长期单施化肥土壤有机碳含量较试验前下降了11.6%～16.1%，有机肥与化肥配施土壤有机碳含量呈上升趋势，常量有机肥化肥配施(MNP、MNPK)土壤有机碳含量分别上升了6.5%和8.4%，二倍量有机肥化肥配施(M2N2、M2N2P2)土壤有机碳含量分别上升了7.7%和11.6%。不施肥和施化肥土壤有机碳储量呈现亏缺，亏缺量在3.5~6.1 t/hm2。有机肥与化肥配施土壤有机碳储量表现为盈余，M2N2P2处理盈余量最高，达到1.9 t/hm2。年均有机碳投入量与土壤固碳速率呈显著的线性正相关，表明黑土仍具有一定的固碳潜力。黑土碳投入的转化效率为34.1%，若要维持黑土有机碳库平衡，则每年至少投入1.416 t/hm2有机碳。可见，在黑土区增加土壤碳投入(有机肥)仍然是最有效的土壤固碳措施。

Abstract

Based on a long-term experiment during 1979—2014 with various fertilizations in black soil of northeast China

the objective of this study was to research evolution characteristics of soil organic carbon (SOC) content

carbon sequestration and its cooperation with carbon input. The results showed that: Compared to the initial soil condition

SOC content in long-term chemical fertilizers application (N

NPK

N2) decreased by 11.6%～16.1%

while the SOC content in long-term horse manure application significantly increased. Chemical fertilizers application plus horse manure with conventional application rates (MNP

MNPK) or doubleness (M2N2

M2N2P2) could increase SOC content 6.5%

8.4%

7.7% and 11.6%

respectively. The carbon sequestration in the treatment of non-fertilization (CK) and chemical fertilizers application appeared deficit

ranged from 3.5～6.1 t/hm2. In contrast

SOC storage in the treatment of chemical fertilizers application plus horse manure showed surplus

and the maximum value was 1.9 t/hm2 (M2N2P2). There was a significantly positive linear correlation between annual average organic C input and C sequestration efficiency

which showed that black soil still had potential carbon sequestration. The calculated annual transform rate of input carbon was about 34.1%

and the least carbon input for maintaining the initial organic carbon level was about 1.416 t/hm2. Therefore

increasing carbon input (manure) was a key to improve carbon sequestration in black soil region.

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