优化控制释放尿素和尿素的组合,以在降低的条件下实现可持续的米麦生产
Yu Tao1,2,3, Dehai Zhang1,2,3, Zhipeng Xing1,2,3,4
1College of Agriculture, Yangzhou University, Yangzhou, China.
Frontiers in plant science
|July 11, 2025
概括
控制释放尿素 (CRU) 与聚合物涂层尿素 (PCU) 和常规尿素 (U) 在降低的条件下改善了大米-小麦产量和土壤健康. 70%的PCU + 30%U基本应用优化了效率和可持续性.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 过度的化肥威胁到农业的可持续性和土壤的健康.
- 在保持作物产量的同时,优化使用效率 (NUE) 是一个全球性的挑战.
- 控制释放尿素 (CRU) 提供了改善管理的潜力.
研究的目的:
- 评估不同控制释放尿素 (CRU) 应用模式对米-小麦产量,利用效率 (NUE) 和降低输入下的土壤肥力的影响.
- 确定可持续农业的最佳CRU应用策略.
主要方法:
- 一项为期两年的米麦旋转研究,比较了传统的 (N) 含量和降低的N含量.
- 四种CRU应用模式使用聚合物涂层尿素 (PCU) 和常规尿素 (U),加上控制 (CK).
- 分析作物产量,NUE,植物含量和土壤营养状况 (有机物,总N,可用P).
主要成果:
- 与CK相比,PCU + U疗法的产量增加了9.16-15.00%;40%的PCU + 30%U基础 + 30%U恐慌模式的产量最高.
- 使用PCU + U的减少 (RN) 实现了与CK可比的产量,产量稳定,经济效益增加 (6.3-35.7%).
- 与CK相比,RN 70% PCU + 30% U的基础应用显著改善了土壤肥力,将有机物增加了2.9%,总N增加了9.3%,与CK相比.
结论:
- 70% PCU + 30% U 基本应用模式有效优化效率,维持大米-小麦产量,并在减少投入的情况下提高土壤肥力.
- PCU + U 应用可以减轻与减少相关的产量损失,并改善土壤营养动态.
- 结果支持采用特定的CRU应用策略,以实现可持续的农业实践,减少的使用,同时保持生产力.
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