叶子的湿透性是叶子P吸收在P缺乏的玉米的主要驱动因素
Jon Niklas Henningsen1, Bruno Maximilian Görlach2, José Manuel Quintero3
1Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Straße 2, 24118, Kiel, Germany.
Plant physiology and biochemistry : PPB
|November 26, 2023
概括
玉米的叶子 (P) 吸收受到叶子的湿透性和肥料性质的显著影响. 表面活性剂增强了P的吸收,特别是在不容易湿的叶面上,改善了受精策略.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 土壤科学 土壤科学
背景情况:
- 叶子化肥提供了一种替代的营养输送方法,特别是 (P),由于土壤肥沃效率低.
- 叶子营养吸收的特征,特别是P,仍然不完整.
- 了解影响叶子P吸收的因素对于优化植物营养至关重要.
研究的目的:
- 调查叶子湿透性,叶子肥料特性和表面活性剂在缺乏P的玉米中叶子P吸收中的作用.
- 确定这些因素对P吸收的综合作用及其对植物细胞超结构的影响.
主要方法:
- 动态蒸汽吸附异温体被用于确定KH2PO4和K2HPO4.4的吸附/脱附特性.
- 扫描电子显微镜和接触角测量评估了两种玉米品种的叶面和喷雾沉积物.
- 传输电子显微镜描述了P吸收对细胞超结构的影响.
主要成果:
- 叶子的湿透性被确定为控制P吸收的主要因素.
- 所有测试的叶子肥料都被吸收,达到足够的组织P水平.
- 在不湿的叶子上,表面活性剂有助于P的吸收,特别是高度K2HPO4盐.
结论:
- 叶子表面特性和肥料特性对于有效的叶子P受精至关重要.
- 优化湿透性和使用表面活性剂可以显著改善P吸收,特别是在具有挑战性的条件下.
- 这项研究为为玉米等作物开发增强的P施肥策略提供了洞察力.
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