常用的商业酸盐肥料中的化物含量及其在中国的潜在风险
Hao Li1, Xuzhe Ma1, Xunrong Huang1
1College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China.
Environmental monitoring and assessment
|August 17, 2023
概括
酸盐肥料为农业土壤提供化物. 一些肥料,如超酸盐 (SSP),酸 (DAP) 和NPK,造成化物积聚的风险更高,特别是在水果和蔬菜作物中.
科学领域:
- 农业化学 农业化学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 酸盐肥料是农业土壤中人为化物的重要来源.
- 关于酸肥料的化物含量及其对土壤化物积累的影响的研究有限.
- 了解肥料的贡献对于管理土壤化物水平至关重要.
研究的目的:
- 为了量化中国常用的酸盐肥料中的总化物 (TF) 和水溶性化物 (WF).
- 根据肥料应用率,估计农业土壤每年的化物积累量.
- 评估与不同类型的酸盐肥料相关的化物积累风险.
主要方法:
- 在六种商业酸盐肥料 (MKP,SSP,MAP,DAP,NPK,WSF) 中对TF和WF的量化.
- 计算每个肥料的[P2O5]/TF比率.
- 根据中国的特定作物P2O5应用率估计土壤年度化物积累.
主要成果:
- 与MKP,MAP和WSF相比,SSP,DAP和NPK的TF和WF显著更高.
- 具有高[P2O5]/TF比率 (MKP,MAP,WSF) 的肥料呈现出较低的化物积累风险.
- 低[P2O5]/TF比率的肥料 (SSP,DAP,NPK) 构成更高的风险,特别是对于高P2O5应用的现金作物.
结论:
- 酸盐肥料的选择显著影响了土壤化物积累.
- SSP,DAP和NPK是土壤化物的重要贡献者,特别是在密集型农业系统中.
- 需要采取缓解策略来管理中国农业土壤中化物积累的情况.
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