Abstract

The effect of salts of humic (HA) and fulvic (FA) acids extracted from ultradispersed humate-sapropel suspension on the growth and development of four basil varieties used for medicinal purposes, as well as on the content of microelements in the above-ground parts of these plants, was studied under conditions of a complete photoculture and a poor nutrient provision. The experiment included midripening Green Large and early-ripening Emily, Lemona, and Marian basil varieties. Plants were grown in a closed grow box for 50 days. Seeds were sown in a soil mix consisting of vermiculite (50%) and peaty-gley soil (50%). The total content of organic matter and N_total in this soil mix was 30.4 and 1.4%, respectively; the content of labile forms of P₂O₅ and exchange K₂O was 88.0 and 82.0 mg/kg, respectively; pH_KCl was 5.57. The experimental scheme included the following variants: control (1.0 N Knop’s solution) and 0.01% solutions of HA or FA salts. The treatment of plants was performed by a single under-root application and a weekly spraying of leaves. According to the performed morphometric and chemical analyses, the best results were shown by var. Lemona plants, whose height and biomass in the treated variant did not differ from the control values (29.75 and 29.00 mg, respectively). Treated plants of this variety also demonstrated insignificant reduction of their photosynthesis efficiency measured by a SPAD optic chlorophyll counter (31.98 relative units on average vs. 35.54 relative units in the control) that indicated the presence of a variety-specific response to the use of such an approach. The least differences between the experimental and control variants observed for the var. Lemona evidenced to the ability of both humic acid fractions to mobilize microelements for the growth of a plant biomass and change of its biochemical composition.

中文翻译：

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与使用化肥相比，超分散腐植酸-腐泥悬浮液的不同组分对罗勒 (Ocimum basilicum L.) 植物生长、发育和质量的影响

摘要

超分散腐植酸悬浮液提取的腐植酸（HA）盐和黄腐酸（FA）盐对四种药用罗勒品种生长发育及地上部分微量元素含量的影响在完全光照培养和营养供应不良的条件下对这些植物进行了研究。该实验包括中熟的 Green Large 和早熟的 Emily、Lemona 和 Marian basil 品种。植物在封闭的生长箱中生长50天。将种子播种在由蛭石 (50%) 和泥炭土 (50%) 组成的土壤混合物中。该土壤混合物中有机质和全氮的总含量_分别为30.4%和1.4%；_{不稳定形式P 2} O ₅和交换K ₂ O含量分别为88.0和82.0 mg/kg。pH值_KCl为5.57。实验方案包括以下变体：对照（1.0 N Knop 溶液）和 0.01% HA 或 FA 盐溶液。植物的处理通过单次根下施用和每周喷洒叶子来进行。根据进行的形态测量和化学分析，var 显示了最好的结果。柠檬植物，处理变体的高度和生物量与对照值（分别为 29.75 和 29.00 毫克）没有差异。该品种的处理植物还表现出通过 SPAD 光学叶绿素计数器测量的光合作用效率的轻微降低（平均 31.98 相对单位，对照中的 35.54 相对单位），这表明存在对使用此类处理的品种特异性反应。一种方法。观察到的实验变体和对照变体之间的最小差异。柠檬证明了两种腐殖酸成分能够动员微量元素促进植物生物量的生长和改变其生化成分。