有机肥配施调理剂对土壤团聚体、碳库稳定性及土壤质量的影响

吴鑫斌; 黄喜心; 朱轩辰; 王绍轩; 蔡昆争

文章摘要

有机肥配施调理剂对土壤团聚体、碳库稳定性及土壤质量的影响

Effects of organic fertilizer combined with soil conditioner on soil aggregates，carbon pool stability，and soil quality

Received:February 11, 2026

DOI：10.13254/j.jare.2026.0166

中文关键词: 有机肥，土壤调理剂，土壤团聚体，碳库指数，土壤质量

英文关键词: organic fertilizer, soil conditioner, soil aggregate, carbon pool index, soil quality

基金项目:国家重点研发计划项目（2022YFD1901603）

Author Name	Affiliation	E-mail
Wu Xinbin	College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China Key Laboratory of Tropical Agricultural Environment in South China, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China
Huang Xixin	College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China Key Laboratory of Tropical Agricultural Environment in South China, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China
Zhu Xuanchen	College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
Wang Shaoxuan	College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
Cai Kunzheng	College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China Key Laboratory of Tropical Agricultural Environment in South China, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China	kzcai@scau.edu.cn

Hits: 333

Download times: 59

中文摘要:

针对南方中低产稻田土壤有机质含量低、结构弱化及碳库不稳等瓶颈问题，探究有机肥与土壤调理剂配施对土壤团聚体及与碳库稳定性的影响。本研究通过两季的田间定位试验，设置常规施肥对照（CK）、常规施肥+有机肥（600 kg·hm^-2，OM）、常规施肥+土壤调理剂（300 kg·hm^-2，SC）以及常规施肥+有机肥配施调理剂（300 kg·hm^-2 OM+150 kg·hm^-2 SC，OM+SC）4个处理，系统分析了不同处理对水稻土壤团聚体稳定性、有机碳组分、碳库管理指数（CPMI）及土壤质量指数（SQI）及水稻产量的影响。结果表明：与CK相比，OM+SC处理促进了微团聚体向大团聚体转化，早、晚季大团聚体（>0.25 mm）比例分别显著增加25.3%和17.3%，平均质量直径（MWD）同步提升，从而增加了团聚体的稳定性。OM+SC处理显著提高土壤颗粒有机碳（POC）及矿物结合态有机碳（MAOC）含量，其中早稻季MAOC增幅达63.8%。配施处理通过优化碳组分构成，使早、晚季CPMI分别提升27.1%和38.0%，实现了碳库由活性积累向稳定性固持的转变。主成分分析显示，有机碳组分与团聚体结构是驱动土壤质量差异的核心因子。OM+SC处理的SQI在两季均表现最高，较CK显著提升9.3%~12.7%。SQI的系统改善最终转化为生产力，使早、晚季水稻理论产量分别显著提高21.8%和14.0%。综上，有机肥配施调理剂通过团聚体结构改善-碳库稳定性增强的耦合作用，显著提升稻田的土壤综合质量，是实现低产稻田提质增效的有效路径。

英文摘要:

Aiming at the critical bottlenecks of low organic matter, structural degradation, and carbon pool instability in low-yield paddy fields in southern China, this study investigated the effects of organic fertilizer combined with soil conditioner on soil aggregates and carbon pool stability. A field experiment in two seasons was conducted with four treatments：conventional fertilization（CK）, organic fertilizer （OM, 600 kg·hm^-2）, shell-based soil conditioner（SC, 300 kg·hm^-2）, and the combination of organic fertilizer and soilconditioner（OM+ SC, 300 kg· hm^-2 OM + 150 kg· hm^-2 SC）. The dynamic changes of soil aggregate stability, organic carbon fractions, carbon pool management index（CPMI）, and soil quality index（SQI）were systematically analyzed. The results showed that, compared with CK, the OM+SC treatment significantly promoted the conversion of microaggregates to macroaggregates. The proportion of macroaggregates（>0.25 mm）increased by 25.3% and 17.3% in the early and late seasons, respectively, accompanied by a synchronous increase in mean weight diameter（MWD）, therefore increased soil aggregate stability. Furthermore, OM + SC significantly increased the contents of particulate organic carbon（POC）and mineral-associated organic carbon（MAOC）, with a 63.8% increment in MAOC observed during the early rice season. By optimizing the composition of carbon fractions, the combined treatment increased CPMI by 27.1% and 38.0% in the two seasons, respectively, facilitating the transition of the soil carbon pool from active accumulation to stable sequestration. Principal component analysis revealed that organic carbon fractions and aggregate structure were the core drivers of soil quality differentiation. The SQI of the OM+SC treatment remained the highest among treatments in both seasons, representing a 9.3%-12.7% increase over CK. This systematic improvement in SQI eventually translated into enhanced productivity, with the theoretical yields of early and late rice significantly improved by 21.8% and 14.0%, respectively. In conclusion, the combined application of organic fertilizer and soil conditioner may systematically increase comprehensive soil quality of southern low-yield paddy fields through the coupling effect of " soil aggregate structural improvement and carbon pool stabilization". This approach represents an effective technical pathway for achieving quality improvement and efficiency enhancement in degraded paddy ecosystems.

HTML View Full Text View/Add Comment Download reader