制备新型生物降解聚合物缓释肥料,以提高营养释放性能和土壤的可用性
Yang Xiang1,2, Yaqing Liu1,2, Mingshan Gong1,2
1Shanxi Province Key Laboratory of Functional Nanocomposites, College of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
Polymers
|May 27, 2023
概括
开发了一种新型的可生物降解聚合物缓释肥 (PSNP),可提供持续的和释放. 这种创新的肥料通过防止固定,提高土壤可用的,促进可持续农业.
科学领域:
- 聚合物化学 聚合物化学
- 土壤科学 土壤科学
- 可持续农业 可持续农业
背景情况:
- 可生物降解的聚合物提供了降解过程中营养物质释放的模型.
- 传统的肥料,如二酸 (ADP) 可以导致营养损失和固定.
- 需要有效的缓释肥料来改善营养的可用性和农业的可持续性.
研究的目的:
- 合成和描述一种含有 (N) 和 (P) 的新型生物降解聚合物缓释肥 (PSNP).
- 评估PSNP在土壤中的营养释放特征.
- 评估PSNP对土壤可用含量的影响,与传统肥料相比.
主要方法:
- 使用溶液凝结反应,从酸盐和尿素甲 (UF) 碎片中制备PSNP.
- 扫描电子显微镜 (SEM),里埃变换红外光谱 (FTIR),X射线衍射 (XRD) 和热重力测量分析 (TG) 用于结构特征.
- 进行了土壤化和浸出实验,以测量营养释放率和可用的含量.
主要成果:
- PSNP成功合成了22%的N和20%的P2O5含量.
- 微生物降解导致N和P的缓慢释放,一个月的累积释放率分别为34.23%和36.91%.
- UF碎片复合了土壤金属离子,显著增加了可用的P含量 (几乎是20-30厘米土壤层中ADP的两倍).
结论:
- 通过一种简单的共聚合方法,可以获得具有有效缓释N和P营养素的PSNP.
- 通过减轻固定,PSNP增强了土壤可用的,优于传统的可溶性化肥.
- 这种可生物降解的聚合物肥显示出促进可持续农业实践的巨大潜力.
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