在不同土壤深度的生物炭修正对玉米根和生长指数的影响
S Gaurav1, B Diptanu1, Chandra M Mehta2
1Department of Agronomy, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India.
Scientific reports
|July 20, 2025
概括
在20厘米深处应用生物炭显著促进了玉米的生长,改善了根和芽的特征. 这种深度还增强了土壤的营养物质,如,和,以改善植物的发育.
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:
- 在土壤中应用生物炭可以增强植物生长,根部发育和营养素的可用性.
- 最佳的生物炭应用深度及其根相互作用仍然是最大限度地提高植物益处的不确定性领域.
研究的目的:
- 研究不同生物炭应用深度对玉米生长和土壤特性的影响.
- 确定生物炭应用的最佳深度,以改善植物和土壤健康.
主要方法:
- 透明树根箱试验包括五种治疗方法:对照和生物炭在5,10,15和20厘米深度应用.
- 分析植物根和芽的特征,土壤营养含量 (N,P,K) 和生物炭形态/元素分布 (FESEM,EDX-光谱).
- 气色谱-质谱法 (GC-MS) 用于分析特定的分子,如甲基酸盐.
主要成果:
- 与对照组相比,在20厘米深度 (T5) 应用生物炭显著改善了玉米根长度 (+48.2%),体积 (+42.7%) 和干燥生物质 (+56.7%).
- 在20厘米处理中,射出生物质 (+23.1%新鲜, +15%干燥),叶面积 (+50.5%) 和叶数 (+40.7%) 也是最高的.
- 土壤N (+20.9%),P (+103%) 和K (+55.5%) 在20厘米的生物炭深度显著增加,甲基酸盐含量也随着深度的增加而增加.
结论:
- 在土壤深度20厘米处均地应用生物炭是最佳的,可增强地下 (根) 和地面 (芽) 植物属性.
- 更深层次的生物炭结合显著改善了土壤营养素的可用性,有助于增强植物生长和发育.
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