磁电激活水灌溉条件下棉花水肥利用率和产量对叶面生物刺激剂的响应

Agronomy Pub Date : 2024-09-17 DOI:10.3390/agronomy14092117
Yan Sun, Chen Zhou, Chunhong Wang, Quanjiu Wang, Yun Liu, Jian Wang
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摘要

在磁电水灌溉条件下,叶面喷施特定浓度的生物刺激素对棉花的水肥利用效率和产量有积极影响,这对绿色可持续农业发展至关重要。生物刺激素作为一种新型肥料,通过提高养分吸收、促进植物生长和增强对环境胁迫的适应能力,在提高作物产量和品质方面具有显著效果。本研究调查了磁电激活水灌溉和叶面喷施生物刺激素对棉花生长和产量的影响,旨在了解其潜在机制。田间试验包括不同的灌溉处理(咸水、淡水、磁电咸水和磁电淡水)和生物刺激剂浓度(1600、1200、800、400 倍稀释和不喷洒)。扫描电镜分析表明,在磁电水灌溉条件下,叶面喷施生物刺激剂可促进棉花生理生长,提高水分和养分吸收效率,从而提高产量。具体而言,与不喷施生物刺激剂的处理相比,在 800 倍生物刺激剂浓度的磁电淡水灌溉条件下,有效棉铃数和单铃重分别增加了 21.84%-48.78% 和 5.50%-18.91%。籽棉产量提高了 16.61%-38.63%,水利用效率提高了 24.35%,收获指数达到 0.33,氮吸收率提高了 76.21%。因此,磁电水灌与叶面生物刺激剂的结合为推进绿色优质农业和可持续生产提供了理论和技术基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Responses of Water and Fertilizer Utilization Efficiency and Yield of Cotton to Foliar Biostimulant under Irrigation with Magnetic–Electric-Activated Water
The foliar application of biostimulants at specific concentrations under magnetic–electric water irrigation has a positive effect on water and fertilizer use efficiency and yield of cotton, which is crucial for green and sustainable agricultural development. As a new type of fertilizer, biostimulants have demonstrated remarkable effects in improving crop yield and quality by enhancing nutrient uptake, promoting plant growth, and increasing resilience to environmental stress. In this study, the effects of magnetic–electric-activated water irrigation and foliar biostimulant application on cotton growth and yield were investigated, with the aim of understanding the underlying mechanisms. The field experiment included various irrigation treatments (brackish water, fresh water, magnetic–electric brackish water, and magnetic–electric fresh water) and biostimulant concentrations (1600, 1200, 800, 400 times dilution, and no spraying). SEM analysis indicated that under magnetoelectric water irrigation, the foliar application of biostimulants enhances physiological growth of cotton, improving the water and nutrient uptake efficiency, and thereby increasing yield. Specifically, the effective boll number and single boll weight under magnetic–electric fresh water irrigation with an 800 times biostimulant concentration increased by 21.84–48.78% and 5.50–18.91%, respectively, compared to the no-spraying treatment. The seed cotton yield rose by 16.61–38.63%, water-use efficiency improved by 24.35%, the harvest index reached 0.33, and nitrogen absorption increased by 76.21%. Thus, integrating magnetic–electric water irrigation with foliar biostimulants offers a theoretical and technical foundation for advancing green, high-quality agriculture and sustainable production.
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