Organic Manure with Chemical Fertilizers Improves Rice Productivity and Decreases N2O Emissions by Increasing Soil Nitrogen Sequestration
文献类型： 外文期刊
作者： Liu, Yiren 1 ; Xiao, Jingshang 1 ; Lan, Xianjin 1 ; Ji, Jianhua 1 ; Hou, Hongqian 1 ; Chen, Liumeng 3 ; Lv, Zhenzhen 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China
2.Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang 330200, Peoples R China
3.Jiangxi Prov Key Lab Agr Nonpoint Source Pollut Co, Nanchang 330200, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Acidified Soil Ameliorat & Utilizat, Nanchang 330200, Peoples R China
5.Natl Agr Expt Stn Agr Environm, Yichun 336000, Peoples R China
关键词： carbon metabolism; carbohydrates; enzymes; nitrogen; soil organic carbon
期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）
ISSN：
年卷期： 2025 年 15 卷 8 期
页码：
收录情况： SCI
摘要： Soil organic nitrogen (SON) positively influences crop productivity, greenhouse gas (GHG) emissions, and sustained nitrogen (N) supply. Herein, we observed the effect of different treatments; no fertilizers (CK), chemical fertilizers (nitrogen, phosphorus, and potassium (NPK)), organic manure, and NPK + OM (NPKOM). This study was performed in a randomized complete block design (RCBD) with three replications. The results indicated that NPKOM treatment significantly decreased the nitrous oxide (N2O) emissions by 19.97% and 17.47% compared to NPK in both years. This was linked with improved soil nutrient availability, soil organic carbon, soil organic nitrogen (SON) storage (10.06% and 12.38%), SON sequestration (150% and 140%), increased soil particulate (44.11% and 44%), and mineral-associated organic N (26.98% and 26.47%) availability. Furthermore, NPKOM also enhanced nitrate reductase (NR: 130% and 112%), glutamine synthetase (GS: 93% and 88%), sucrose phosphate synthase (SPS: 79% and 98%), SSs (synthetic direction; 57% and 50%), and decreased SSs activity in the decomposition direction (18% and 21%). This, in turn, inhibited the decomposition of sucrase and enhanced starch conversion into carbohydrates, thus leading to an increase in rice yield and a decrease in N2O emissions. All fertilizations, particularly NPKOM, significantly enhanced grain protein contents by increasing N uptake and its availability. Therefore, NPKOM is an effective practice to enhance rice productivity, and SON sequestration and mitigate the N2O emissions and subsequent climate change.
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