KH2PO4-Based PK/UiO-66 Nanoparticles for Efficient Nutrient Delivery and Plant Growth Promotion of Pea Seedlings

Current agricultural foliar fertilization faces significant challenges such as poor nutrient retention and low utilization efficiency. To address this, we developed a nanoparticles-based foliar fertilizer, P and K-loaded nanoparticles (PK/UiO-66 NPs), using UiO-66 framework. The unique structure and properties of PK/UiO-66 NPs contributed to its superior performance in the field, ensuring prolonged nutrient supply to plants. The fertilizer demonstrated excellent foliar adhesion and washout resistance, allowing PK/UiO-66 NPs to continue supplying P and K nutrients to plants even after rainfall washout, thereby significantly enhancing plant growth. The stem length of pea sprouts increased by 20% and the photosynthesis rate by 17.6%, accompanied by highlight and activity. In addition, PK/UiO-66 NPs exhibited controlled-release characteristics, ensuring a steady nutrient supply over an extended period. This feature reduced nutrient losses and enhanced fertilizer utilization efficiency. PK/UiO-66 NPs released up to 62.3% of P after 48 h, whereas the KH2PO4 solution released over 90% of P within just 2 h. Transcriptomics analysis revealed that spraying PK/UiO-66 NPs regulated genes involved in pea growth, photosynthesis, and overall plant development, providing molecular insights into how the fertilizer modulates plant physiology. This study offers new perspectives on improving foliar spraying efficiency.

当前农业叶面施肥面临养分留存不佳、利用效率低下等诸多挑战。为此，我们以UiO-66框架（UiO-66 framework）为载体，制备了负载磷（P）、钾（K）的纳米颗粒肥料（PK/UiO-66纳米颗粒，PK/UiO-66 NPs）。PK/UiO-66纳米颗粒独特的结构与性能使其在田间表现优异，可实现对植物的长效养分供给。该肥料具备优异的叶面附着性与抗冲刷性能，即便经历降雨冲刷，PK/UiO-66纳米颗粒仍可持续为植物提供磷钾养分，进而显著促进植物生长：豌豆芽苗的茎长提升20%，光合速率提升17.6%，且生理活性显著增强。此外，PK/UiO-66纳米颗粒具备控释特性，可在较长周期内为植物提供稳定的养分供给，有效降低养分流失并提升肥料利用效率。实验数据显示，PK/UiO-66纳米颗粒在48小时内仅释放62.3%的磷，而磷酸二氢钾（KH₂PO₄）溶液仅在2小时内就释放了90%以上的磷。转录组学（Transcriptomics）分析结果表明，喷施PK/UiO-66纳米颗粒可调控豌豆生长、光合及植株整体发育相关基因的表达，为揭示该肥料调控植物生理的分子机制提供了重要依据。本研究为提升叶面喷施施肥效率提供了全新的研究视角。

搜集汇总

背景与挑战

背景概述

该数据集围绕一种基于KH2PO4的PK/UiO-66纳米颗粒叶面肥料研究，旨在解决农业中叶面施肥养分保持差和利用效率低的问题。研究表明，该肥料具有优异的叶面附着性、抗冲刷性和控释特性，能显著促进豌豆幼苗生长（茎长增加20%，光合速率提高17.6%），并通过转录组学分析揭示了其调控植物生理的分子机制，为高效叶面施肥提供了新视角。