适度的有机肥取代部分化学肥料改善了土壤微生物碳源利用和细菌社区组成在雨小麦田:当前一年
Xiaoli Liu1, Wenping Yang2, Wenguang Li1
1College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi, China.
Frontiers in microbiology
|July 3, 2023
概括
在雨水养的小麦田中使用有机肥料替代物可以提高作物产量和土壤健康. 使用450公斤/公有机肥的FO3处理,显示了土壤营养素和微生物活动的最显著改善,增强了小麦产量.
科学领域:
- 农业科学 农业科学
- 土壤微生物学 土壤微生物学
- 环境科学 环境科学
背景情况:
- 化学肥料提高了农业生产,但可能对环境产生负面影响.
- 有机肥料提供了一种可持续的替代品,可以部分取代化学肥料,可能提高土壤健康和作物生产率.
- 了解有机肥料替代对土壤微生物群落和碳来源利用的影响,对于优化农业实践至关重要.
研究的目的:
- 研究不同程度的有机肥替代对土壤微生物碳源利用和雨小麦田中的细菌群体组成的影响.
- 评估有机肥对小麦产量,土壤特性和肥料部分生产力的影响.
- 为了确定雨小麦种植的最佳有机肥替代率.
主要方法:
- 使用完全随机的块设计进行了实地实验,使用四种治疗方法:控制 (100% NPK) 和三个有机肥替代水平 (FO1,FO2,FO3).
- 评估的小麦产量参数,土壤特性 (总,可用的,可用的,土壤有机物) 以及土壤微生物对31种碳来源的利用.
- 分析了土壤细菌群体的组成,并使用高通量测序预测了功能基因丰度.
主要成果:
- 与对照组相比,有机肥替代处理显著增加了小麦产量 (3%-7%),每公的数 (13%-26%),每的粒数 (8%-14%),以及1000粒的重量 (7%-9%).
- 土壤性能得到改善,在有机肥处理中,总 (26%),可用的 (102%),可用的 (12%) 和土壤有机物 (26%) 的含量显著增加.
- FO3处理 (450公斤/公有机肥) 显示,增强了特定碳来源 (β-甲基D-葡萄糖化物,L-青酸,糖原) 的利用,增加了有益细菌的丰富性 (蛋白质细菌,酸性细菌),并增强了功能基因K02433,与土壤营养素和小麦产量产生了积极的相关性.
结论:
- 有机肥料的替代有效地改善了雨水养小麦的产量和土壤特性.
- 处理FO3代表了最有利的水平的有机肥替代,增强土壤微生物的活动和营养素的可用性.
- 推实施有机肥置换,特别是在FO3水平上,以实现可持续的雨水小麦生产.
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