评估新型可生物降解的聚合物矩阵肥料,用于效农业
Torsten Witt1, Nicole Robinson2, Ana C Palma3
1School of Chemical Engineering, The University of Queensland, St Lucia, Queensland, Australia.
Journal of environmental quality
|March 7, 2024
概括
新的可生物降解的聚合物矩阵肥在热带农业中提供了提高 (N) 效率. 这些新型增强效率肥料 (EEF) 显示出降低N损失和提高作物产量的前景.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 材料科学 材料科学 材料科学
背景情况:
- 提高效率的肥料 (EEF) 对于减少农业中 (N) 损失至关重要.
- 与温带地区相比,目前的EEF在热带环境中效果较差.
- 开发适合热带条件的新型EEF对于可持续农业至关重要.
研究的目的:
- 设计和评估新的化挤出生物降解聚合物基质增强效率肥料 (EEFs).
- 为了评估这些新的EEF在热带土壤中的 (N) 释放特征.
- 评估EEFs的农学性能,使用在热带土壤条件下.
主要方法:
- 尿素的融挤出成可生物降解的聚酸 (PHA) 或聚乙烯基酸-联合甲酸 (PBAT) 聚合物矩阵.
- 在水和沙土柱中评估 (N) 释放率.
- 对[Sorghum bicolor (L.) Moench]生长,积和在大土中粮食生产的评估.
主要成果:
- 与商业上涂层的EEF相比,矩阵化肥配方表现出更渐进的N释放.
- 植物N积累和谷物产量的差异在试验中的配方之间是微小的.
- 农作物δ15N签名有效跟踪N转换和损失,作为EEF有效性的综合衡量标准.
结论:
- 融化混合生物降解聚合物矩阵肥料显示出作为热带农业的EEF的潜力.
- 通过选择生物聚合物类型和控制N释放的N加载率来调整EEF性能.
- 将高通量选与现实的植物-土壤系统测试相结合,对于EEF评估至关重要.
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