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评估在巴西热带土壤中应用的替代源的农业效率

Lucas Jónatan Rodrigues da Silva¹, Aline da Silva Sandim², Ana Paula Rodrigues da Silva²

¹Department of Forest Science, Soils and Environment, College of Agronomic Sciences, São Paulo State University, Botucatu, SP, 18610-307, Brazil. lucas.jonatan@unesp.br.

Scientific reports

|April 12, 2024

概括

这项研究评估了巴西热带土壤中玉米的替代 (P) 来源. 沉的酸盐来源显示出减少对商业化肥的依赖的潜力,特别是在低粘土土壤中.

科学领域:

土壤科学土壤科学
农业学是一种农业学.
植物营养植物营养

背景情况:

可持续农业需要在热带土壤中有效地管理 (P).
关于巴西玉米的替代P来源,具体区域数据有限.
由于资源限制和环境影响,需要探索替代P肥料.

研究的目的:

评估五个巴西热带土壤中的玉米 (Zea mays L.) 替代P来源的农业效率.
评估P源对玉米作物属性的影响,包括高度,生物质和营养积累.
为了确定不同土壤类型的P可用性和相对农学效率.

主要方法:

温室实验使用随机的完整块设计.
两个因素:五种热带土壤类型和三个替代P来源 (沉1,沉2,反应),以及一个商业来源 (三重超) 和一个对照.
评估玉米的高度,干燥重量,茎直径,营养积累 (P,N,S,Ca,Mg),土壤P可用性和相对农业效率.

主要成果:

三重超酸盐 (TSP) 在大多数玉米作物属性中普遍优于其他替代来源.
沉1 (PP1) 与PP2和活性 (RP) 相比,显著增加了P,N和S积累.
PP1在高粘土土壤中增强了P的可用性,而PP2在Oxisol2中的应用最大限度地增加了Ca和Mg的积累. 在Oxisol2.2中,PP1显示了最高的相对农学效率.

结论:

沉式酸盐来源 (PP1和PP2) 显示了与TSP相似的性能,表明可能减少对商业P肥料的依赖.
替代P来源显示出希望,特别是在低粘土的热带土壤中,提供具有成本效益和可持续的P受精策略.
这项研究为优化土壤P管理和提高巴西热带农业生态系统玉米生产率提供了宝贵的见解.

关键词:

营养素的积累营养素的积累化肥是一种化肥.的使用效率高.

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