控制灌改善了分区和农业使用效率在中等输入下在米中
Haijun Liu1, Tangzhe Nie1, Peng Chen2
1School of Water Conservancy and Electric Power, Heilongjiang University, Harbin 150080, China.
Plants (Basel, Switzerland)
|March 14, 2026
概括
控制灌 (C) 与洪水灌 (F) 相比,可以增加水的干物质和积. 将C与中度 (N) 应用相结合,可以提高N使用效率和增加N分配.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 土壤科学 土壤科学
背景情况:
- 的应用率和灌制度极大地影响了的产量和的使用效率.
- 优化这些因素对于可持续农业和粮食安全至关重要.
研究的目的:
- 评估不同灌方案和气应用率对大米产量和气吸收的影响.
- 为了确定最佳的组合,提高使用效率和谷物产量.
主要方法:
- 在青安国家灌实验站进行为期四年的实地实验 (2021-2024年).
- 两个灌模式:控制 (C) 和洪水 (F).
- 四个的应用速度:0,82.5,110,和137.5公斤N·ha-1 .
主要成果:
- 与洪水灌 (F) 相比,受控灌 (C) 增加了地面上的干物质 (3-9%) 和总积 (4.1-25.5%).
- 在两种制度下,积在更高的应用率下停滞不前.
- 适度的 (N2: 110公斤N·ha-1) 最大化了收获指数 (NHI),表明最佳的N分配.
结论:
- 控制灌显著提高了收获指数 (NHI) 和农业效率 (AE).
- 适度的 (N2) 应用进一步增强了NHI,并促进了分离到恐慌.
- 控制灌和适度应用的组合优化了使用效率和中的内部分区.
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