使用和度作为可持续管理的指南,平衡作物生产和水质目标
Maarten van Doorn1, Debby van Rotterdam2, Gerard H Ros1
1Nutriënten Management Instituut, Nieuwe Kanaal 7C, 6709PA, Wageningen, the Netherlands; Earth Systems and Global Change Group, Wageningen University, P.O. Box 47, 6700AA, Wageningen, the Netherlands.
Journal of environmental management
|May 4, 2025
概括
降低土壤中 (P) 和度 (PSD) 对环境保护至关重要. 虽然P采矿对作物产量的影响有限,但由于P含量高,在荷兰土壤中达到环境值是一个重大挑战.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 目前的土壤 (P) 测试没有预测P漏风险.
- 农学P建议缺乏环境边界考虑.
- 土壤溶液中的Ortho-P度是P浸出的一个关键指标.
研究的目的:
- 为了将农业土壤P测试值转换为平衡状态的正方形P度.
- 建立一个环境P和度 (PSD) 的水保护值.
- 为了比较荷兰农业土壤当前的农业目标和环境PSD值.
主要方法:
- 用P吸附能力和P结合亲和力计算了土壤P和度 (PSD).
- 均衡的正方形P度是从农学土壤P测试值得出的.
- 环境PSD值与当前和农业目标值进行了比较.
主要成果:
- 当前的PSD值超过了84%的荷兰农田的农学目标和94%的荷兰农田的环境值.
- 通过P采矿减少PSD对作物产量产生了有限的不利影响.
- 脆弱地区 (低P吸收,高水文连接) 显示出潜在的产量减少.
结论:
- 高的农业P目标有助于P开采产量影响有限.
- 在荷兰,将PSD降低到环境值是具有挑战性的,因为便中的P含量很高.
- 在P-易受伤害的地区,可能需要替代土地使用或作物选择.
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