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提高玉米的吸收,使用高度和低度肥的最佳混合物

Chen Chen^1,2, Yue Xiang², Xiaoqiang Jiao²

¹Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, College of Life Sciences, Fudan University, Shanghai, China.

Frontiers in plant science

|August 29, 2024

概括

混合低度 (P) 肥料,如单一超 (SSP) 与二酸 (DAP) 或酸 (CMP) 与单一酸 (MAP),可优化玉米的P利用率和土壤的P生物可用性.

科学领域:

农业科学农业科学
土壤科学土壤科学
植物营养植物营养

背景情况:

高度 (P) 肥料对于作物生长至关重要.
低度的P肥料,如酸 (CMP) 和单一超酸 (SSP),在混合时可以成为高效的P来源.
优化P利用对于可持续农业至关重要.

研究的目的:

研究混合低P肥料 (CMP,SSP) 与高P肥料 (DAP,MAP) 对玉米P利用的影响.
在不同的肥料混合物下评估P吸收,生物质生产和土壤P生物可用性.
为了确定玉米在酸性和性土壤中的最佳混合比率.

主要方法:

进行了一项为期48天的实验,使用了五种SSP+MAP和CMP+DAP的混合物.
玉米是在酸性和性土壤中种植的,使用不同的肥料混合物.
测量包括树枝和根生物量,树枝P吸收,根长度和土壤P分量 (Olsen-P,不稳定无机P).

主要成果:

在酸性土壤中50%CMP+50%DAP的玉米生物质和P吸收与100%DAP相比.
同样,性土壤中50%的SSP+50%的MAP给出了与100%的MAP相似的结果.
混合物增加了不稳定的无机P (Pi) 池和奥尔森-P,提高了土壤P的生物可用性.

结论:

在酸性土壤中,SSP和MAP的1:1混合物,在性土壤中,CMP和DAP的混合物,有效地满足了玉米的P要求.
肥料的战略混合优化了P使用效率,而不仅仅依赖高度P肥料.
这种方法通过改善P的管理来支持可持续农业.

关键词:

酸性土壤是一种酸性土壤.性土壤是一种性土壤.无机池是一种无机池.玉米玉米玉米是一种是一种的物质.

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