Maize is one of the most sensitive industrial crops of zinc supply. Questions about fertilisation methods and the type of fertilisers used are the subject of serious scientific discussion. The key objective of this paper was to evaluate the possibilities to recover the yielding potential of Zn-deficient young maize plants by application of nanosized Zn-containing foliar fertilisers. The agronomic response of Zn-deficient maize plants to foliar fertilisation with nanoscale zinc-containing foliar fertilisers was investigated. The study was conducted in two stages: i) planting and growing the plants under controlled conditions in a zinc-deficient environment for three months; and ii) moving the plants and continuing the experiment in field conditions. A single spray with two nanosized zinc-containing foliar fertilisers was carried out. The physiological status of the plants and the dynamic of zinc and micro- and macroelements concentration in plant organs were monitored. The influence of foliar zinc fertilisation on yield and grain structural components has been determined. Our results indicated that zinc fertilisation throughout the initial growth stages plays a decisive role in the formation of the reproductive organs of maize plants. Foliar zinc fertilisers can entirely recover the physiological performance of plants grown under conditions of zinc deficiency.

Highlights
- The application of foliar fertilisers is extremely suitable as the possibility of much faster zinc absorption than from the soil.
- Zn-fertilisation of maize plants during the initial growth stages plays a decisive role in the formation of the reproductive organs of maize.
- Foliar zinc fertilisers can entirely recover the physiological performance of plants grown under conditions of zinc deficiency.

玉米是锌供应最敏感的经济作物之一。关于施肥方法和所用肥料类型的问题是严肃科学讨论的主题。本文的主要目的是评估通过施用纳米尺寸的含锌叶面肥来恢复缺锌玉米幼苗的产量潜力的可能性。研究了缺锌玉米植物对纳米级含锌叶面肥进行叶面施肥的农艺反应。该研究分两个阶段进行：i) 在受控条件下在缺锌环境中种植和种植植物三个月；ii) 移动植物并在田间条件下继续实验。使用两种纳米尺寸的含锌叶面肥进行单次喷雾。监测植物的生理状态以及植物器官中锌和微量元素和常量元素浓度的动态。已经确定了叶面施锌肥对产量和籽粒结构成分的影响。我们的研究结果表明，整个生长初期的锌肥在玉米植株生殖器官的形成中起着决定性作用。叶面锌肥可以完全恢复缺锌条件下生长的植物的生理性能。我们的研究结果表明，整个生长初期的锌肥在玉米植株生殖器官的形成中起着决定性作用。叶面锌肥可以完全恢复缺锌条件下生长的植物的生理性能。我们的研究结果表明，整个生长初期的锌肥在玉米植株生殖器官的形成中起着决定性作用。叶面锌肥可以完全恢复缺锌条件下生长的植物的生理性能。

亮点
- 叶面肥的应用非常适合，因为它可以比从土壤中吸收更快的锌。
- 玉米植株在初始生长阶段施锌对玉米生殖器官的形成起着决定性作用。
- 叶面锌肥可以完全恢复缺锌条件下生长的植物的生理性能。