精确的部分根区灌技术和- fertigation 管理改善了玉米的生理化学反应,产量和在干旱气候下使用水的情况
Ayman M S Elshamly1,2, A S Abaza3
1Water Studies and Research Complex. National Water Research Center, Cairo, Egypt. ayman_saleh@nwrc.gov.eg.
BMC plant biology
|August 14, 2024
概括
优化玉米产量和用水效率需要了解植物-营养-灌相互作用. 在缺水灌下,将酸盐和化与部分根区滴水灌相结合,可以提高营养吸收和作物生产率.
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:
- 优化灌用水和作物生产率需要了解植物-环境-肥料相互作用.
- 部分根区滴灌 (PRDI) 技术是农业高效水资源管理的关键.
- 酸盐和酸对植物营养和耐压力至关重要.
研究的目的:
- 根据PRDI,评估酸盐和化应用方法的有效性.
- 评估对玉米营养吸收,产量和灌用水效率 (IWUE) 的影响.
- 在不同灌水平下比较替代与固定PRDI技术.
主要方法:
- 在两个夏季 (2021-2022) 进行的开放场地实验.
- 在两个灌水平上使用了交替和固定PRDI技术.
- 通过叶子和土壤方法应用酸盐和合,单独和组合.
主要成果:
- 缺水灌对玉米生理学和营养吸收产生了负面影响.
- 固定PRDI与酸盐和基的结合土壤应用改善了和的吸收,以及干旱下的抗氧化活性.
- 与相同治疗方法的替代PRDI增强了,和铁的吸收,以及特定的抗氧化酶.
结论:
- 在75%灌的替代PRDI下,对酸盐 (3g L-1) 和合 (1.25 kg ha-1) 的土壤应用是最优的.
- 这种组合最大限度地提高了玉米的根长度,叶子含水量,叶绿素,产量和IWUE.
- 替代性PRDI与特定营养管理相结合,可以提高干旱抵抗力和作物表现.
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