[有机堆肥对有机碳储存和灌土中玉米产量的影响]
Lei Li1,2, Peng Jiang3, Zhi-Ming Zhu4
1Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China.
Huan jing ke xue= Huanjing kexue
|January 14, 2026
概括
应用有机堆肥显著改善了灌地区的土壤健康和玉米产量. 通过堆肥增加有机碳储存可以提高土壤结构和营养素的可用性,从而可持续地提高作物生产率.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 宁夏的灌土壤面临着营养含量,有机碳捕获和作物产量方面的挑战.
- 了解有机堆肥的影响对于改善这些地区的土壤健康和农业生产率至关重要.
研究的目的:
- 调查有机堆肥应用率的变化对土壤物理化学性质,有机碳储存和玉米产量的影响.
- 确定最佳的堆肥应用,以提高干旱灌地区的土壤碳池和作物生产率.
主要方法:
- 一个为期四年的固定场地实验,使用六个堆肥应用梯度 (0到22,500 t·hm−2·a−1).
- 分析土壤的物理化学特性,聚合物稳定性 (MWD),营养含量 (可用的P,K) 和有机碳储存.
- 统计分析包括重法,冗余分析 (RDA),变异分区和结构方程建模 (SEM).
主要成果:
- 有机堆肥的应用显著改善了土壤聚合物的稳定性 (MWD在M5增加了40.02%),以及营养含量 (增加了可用的P和K).
- 堆肥应用增加了土壤有机碳储存,而对照地块显示枯竭. M5处理增加了1.35t·hm-2.2的储存.
- 玉米产量随着堆肥的应用显著增加,M5与M0.0相比增加了140.17%. 在有机碳储存和产量之间发现了强烈的正线性关系.
结论:
- 有机堆肥的应用有效地提高了土壤结构,营养素的可用性和灌泥土中的碳捕获.
- 增加有机碳储存与提高玉米产量直接相关,突出其在土壤肥力和生产力方面的作用.
- 该研究提供了关于畜牧业废物的可持续管理,促进绿色农业和干旱地区土壤碳捕获的证据.
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