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用合成N肥料优化乳制品废水的应用减少了粘土泥土中的化

Obemah David Nartey^1,2, Deyan Liu¹, Jiafa Luo³

¹State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.

|July 25, 2024

概括

用乳制品废水 (DE1) 取代合成肥,可减少高达40.4%的出水,提高小麦-玉米系统中的作物产量和使用效率 (NUE). 较高的废水率 (DE2,DE3) 增加了浸和减少了NUE.

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:

乳制品废水和便的高应用率可能导致 (N) 泄漏,可能影响地下水质量.
在农业系统中可持续的营养管理对于最大限度地减少环境污染和优化作物生产率至关重要.

研究的目的:

为了研究乳制品废水和肥的不同应用率对小麦-玉米作物系统中 (N) 浸出和生物质产量的影响.
评估用乳制品副产品取代合成N肥料的潜力,以改善营养管理和作物表现.

主要方法:

进行了 lysimeter 实验,使用了七种处理方法,包括一个对照方法,仅使用合成 N 肥料,以及合成 N 肥料与乳制品废水 (DE) 或乳制品便 (SM) 的不同组合.
在小麦-玉米作物旋转下监测了泄漏损失和生物质产量.
在不同处理方法中评估了使用效率 (NUE) 和作物吸收率.

主要成果:

与对照组 (CN) 相比,DE1处理 (50%的合成N被乳制品废水取代) 增加了玉米的产量10.0%,小麦的NUE增加了26.5%,同时减少了N出22.4% (小麦) 和40.4% (玉米).
较高的乳制品废水率 (DE2,DE3) 显著增加了N浸 (27.2-241%) 和减少了NUE (26.2-55.2%).
乳制品肥处理 (SM1,SM2) 一般减少了N出 (SM1减少了71.2%,SM2在小麦季节减少了32.0%),提高了产量和NUE,季节间的影响各不相同.

结论:

用乳制品废水 (DE1) 取代50%的合成N肥料提供了一个有希望的策略,以减轻N漏损失并提高小麦-玉米系统中的作物生产率.
优化乳制品废水和物的应用率至关重要,因为过量可以加剧N出并对NUE产生负面影响.
乳制品副产品可以有效地利用,减少对合成肥的依赖,为更可持续的农业实践做出贡献.

关键词:

牛奶产品的废水是牛奶制品的废水.无机的无机是一种无机的.光测量仪可以测量肥料是人类的肥料.小麦-玉米的作物种植.

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