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在生物炭应用2年后,肥料在田间的命运

Lining Zhao¹, Weijun Yang¹, Zi Wang¹

¹College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China.

Plants (Basel, Switzerland)

|March 17, 2025

概括

将生物炭添加到灌农田中可以改善化肥的吸收和春季小麦产量. 减少15%的化肥与生物炭应用相结合,提高了作物产量和土壤中的保留.

科学领域:

农业科学农业科学
土壤科学土壤科学
农业学是一种农业学.

背景情况:

(N) 肥料管理对于灌农业至关重要.
生物炭的应用是改善土壤肥沃性和营养使用效率的潜在策略.
了解生物炭应用后的吸收,利用和残留分布对于优化化肥料策略至关重要.

研究的目的:

用生物炭应用量化肥料的吸收,利用和土壤残留分布.
为优化在灌农田中的N肥料和生物炭应用战略提供科学基础.
评估不同肥和生物炭施加率对春小麦产量和气动态的影响.

主要方法:

使用N追踪器技术在微粒度中追踪肥料N.
研究了两个级别的N肥料应用 (300公斤·ha-1和255公斤·ha-1).
评估了来自玉米炉的三种生物炭应用水平 (0,10 × 10³,和20 × 10³ kg·ha^-1).
衡量春小麦产量,植物器官中的含量和成熟时的土壤.

主要成果:

春小麦的N吸收率在20.60-35.32%之间,土壤N吸收率超过64.68%.
生物炭应用增加了肥料N的利用率和土壤中的残留物,同时减少了N的损失.
减少N肥料 (255公斤·公-1) 和中等生物炭 (20 × 10公斤·公-1) 的组合显著增加了春季小麦产量,高达25.35%,并减少了48.24%的N损失.

结论:

生物炭的应用增强了春季小麦吸收来自肥料的,并改善了肥料N在土壤中的保留.
减少15%的肥与中等生物炭应用相结合,是提高产量和使用效率的最佳策略.
这种综合方法为灌农田的管理提供了一个可持续的框架.

关键词:

15N 标记器技术标记器技术生物炭是一种生物炭.化肥化肥是一种化肥.

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