Pak J Biol Sci. 2022 Jan;25(4):289-295. doi: 10.3923/pjbs.2022.289.295.
<b>Background and Objective:</b> Basil (<i>Ocimum basilicum</i> L.), an aromatic herb, is considered one of the most important crops with essential oils as well as other bioactive compounds. Basil leaves have tremendous pharmaceutical benefits and are used for foods. Slow-release fertilizers have been developed to optimize the fertilization of crops. This work aims to discover the effect of NPK Slow-Release Fertilizer Coated by Starch (NPK-SRFS) at different rates on growth, yield and essential oil components of basil grown on the field in Northern Vietnam. <b>Materials and Methods:</b> Basil seedlings, sown from seeds, were used as plant materials. NPK-SRFS was stocked in the Faculty of Chemistry, Hanoi Pedagogical University 2. The experiments were designed in a fully randomized block model, consisting of four treatments with different rates of NPK-SRFS. Each treatment had three replicates with an area of 8 m<sup>2</sup>. Duncan's Multiple Range Test was being used for statistical analysis (p = 0.05). <b>Results:</b> All 3 NPK-SRFS treatments significantly increased the number of buds and leaves per plant compared to the control. However, NPK-SRFS at different rates affected diversely plant height and leaf area of the basil. F5.0 and F10 treatments accelerated chlorophyll content as well as Fv/Fm value in comparison with none NPK-SRFS treatment. The application of NPK-SRFS at different rates caused slightly different changes in basil essential oil composition, especially the content of Methyl Chavicol, the most abundant oxygenated monoterpene and α-trans-Bergamotene, the most abundant sesquiterpene hydrocarbon. <b>Conclusion:</b> The present study provides further insight into the influence of NPK-SRFS on the growth, yield and essential oil components of basil.
<b>背景和目的：</b>罗勒（<i>Ocimum basilicum</i> L.）是一种芳香草本植物，被认为是最重要的作物之一，其精油和其他生物活性化合物含量丰富。罗勒叶具有巨大的药用价值，可用于食品。为了优化作物施肥，已经开发出缓释肥料。本研究旨在探索不同用量的淀粉包膜 NPK 缓释肥（NPK-SRFS）对越南北部田间种植的罗勒生长、产量和精油成分的影响。<b>材料和方法：</b>本研究使用种子播种的罗勒幼苗作为植物材料。NPK-SRFS 储存在河内教育大学化学系 2 号。试验采用完全随机区组设计，包括 4 个不同用量的 NPK-SRFS 处理。每个处理有 3 个重复，面积为 8 m<sup>2</sup>。采用邓肯氏多重范围检验进行统计分析（p = 0.05）。<b>结果：</b>与对照相比，所有 3 种 NPK-SRFS 处理均显著增加了每株植物的芽和叶片数量。然而，不同用量的 NPK-SRFS 对罗勒的株高和叶面积有不同的影响。F5.0 和 F10 处理加速了叶绿素含量以及 Fv/Fm 值的增加，而无 NPK-SRFS 处理则没有。不同用量的 NPK-SRFS 处理对罗勒精油成分的变化略有不同，特别是最丰富的含氧单萜甲位-香芹醇和最丰富的倍半萜烃α-反式佛手柑烯的含量。<b>结论：</b>本研究进一步探讨了 NPK-SRFS 对罗勒生长、产量和精油成分的影响。
