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类型和可生物降解聚合物对命运和植物土壤系统中的有效性的作用

Leslie R Sigmon¹, Shital R Vaidya², Corey Thrasher¹

¹Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States.

Journal of agricultural and food chemistry

|October 27, 2023

概括

聚酸酸 (PHA) 生物聚合物有效地改善了番茄作物中 (P) 的可用性和植物吸收. 这些PHA封装的P源显著减少了P损失,为农业提供了可持续的解决方案.

科学领域:

农业科学农业科学
环境科学环境科学
土壤科学土壤科学

背景情况:

(P) 对于作物生产至关重要,但由于营养使用效率低而受到影响.
低效的P使用会导致通过营养物质的流失和漏而导致环境污染.
开发有效的P-交付系统对于可持续农业至关重要.

研究的目的:

评估不同 (P) 源的有效性,包括那些被封装在多基酸盐 (PHA) 中的,用于番茄种植.
评估这些处理对植物生长,土壤生物可用性P和通过排水和浸而导致的P损失的影响.
确定最佳的P-交付策略,以提高营养使用效率并最大限度地减少环境污染.

主要方法:

番茄植物是在用五种不同的P-来源修改的土壤中种植的,单独种植或用PHA封装.
分析了处理对植物P吸收的影响,土壤生物可利用的P水平,以及在流水和漂水中的P度.
使用相关性分析来确定P来源,植物表现和营养损失之间的关系.

主要成果:

与对照组相比,微和纳米酸没有改善生物可用P或植物吸收.
传统的P来源 (MCP,DCP,CAP) 和PHA-MCP增加了P吸收和生物可用P,但也增加了P损失.
PHA-DCP和PHA-CAP显示了增强的生物可用P和植物P吸收,并显著减少了在流水和漏中的P损失.
生物可利用的P与植物的P吸收有很好的相关性,并且从水溶性可以预测浸出的P.

结论:

聚酸 (PHA) 封装是一种有前途的策略,可以提高农业中的使用效率.
用PHA封装的DPC和CAP显著提高了植物P的可用性和吸收,同时最大限度地减少了环境P的损失.
这种方法提供了一种可持续的方法来减轻与肥应用相关的不利环境影响.

关键词:

生物聚合物生物聚合物相关性分析的相关性分析.泄漏 (leaching) 泄漏 (leaching) 是指一个过程.营养物质使用效率效率.管理的管理.排水过程中的排水.

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