水-肥料协同效应和资源优化为生产:一个中央复合设计和响应表面方法方法方法方法
Gaiya Mu1, Yuanbo Jiang1, Haiyan Li1
1College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou 730070, China.
Plants (Basel, Switzerland)
|March 17, 2025
概括
优化灌和肥草 (Medicago sativa L.) 提高了产量和用水效率 (WUE). 战略性水资源管理,特别是分支期间,以及平衡的和是干旱地区的关键.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 植物生理学 植物生理学
背景情况:
- 干旱/半干旱地区的柳生产面临着土壤枯竭和水资源短缺带来的挑战.
- 优化灌和施肥对于提高料系统的生产力和可持续性至关重要.
研究的目的:
- 调查灌和施肥对子产量和用水效率 (WUE) 的影响.
- 确定在资源有限的环境中对生产的最佳管理策略.
主要方法:
- 在两年内进行户外大实验.
- 研究了分枝和芽阶段的水调节 (60-100% θ0.85).
- 应用和肥 (0-280公斤/公).
- 使用响应表面方法 (RSM) 与中央复合设计 (CCD).
主要成果:
- 响应表面模型显示出高可靠性 (R2 > 0.94).
- 在分支阶段的水调节显著影响了产量和蒸发 (ET).
- 和肥施肥对WUE产生了积极的影响,过度水平的收益率下降.
结论:
- 确定了最佳条件:分枝阶段的水调节 (82.26-83.12% θ0.85),芽阶段的水调节 (78.11-88.47% θ0.85),N (110.59-128.88公斤/公) 和P (203.86-210公斤/公).
- 这些发现为干旱/半干旱地区的可持续和高效的生产提供了实际指导方针.
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