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Commercial Humic Substances Stimulate Tomato Growth

机译：商业腐殖质刺激番茄生长

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A greenhouse experiment was conducted to investigate the effects of two commercial lignite-derived, humic substance-containing products (K-humate and K-fulvate) on tomato yield and nutrient uptake in soil and sand cultures. Seeds of tomato (Acadia cv. field busm) were grown in pots filled with soil and sand media and pretreated with a basic nutrient solution (control) and two levels of the K-humate and K-fulvate (equivalent to 0, 8 and 80 L ha~(-1)): low rate and high rate, respectively. A foliar treatment was included using only the low rate. Plant growth response as indicated by the fresh/dry biomass and incorporation of macro and secondary nutrients (N, P, K, Ca, Mg, S) into shoots were measured. Low rates (8 L ha~(-1)) of K-humate and K-fulvate application on growth media and in foliar treatments resulted in significant (p < 0.001) increases in fresh/dry biomass of shoot and fruits and increased nutrient uptake. Effects at high rates (80 L ha~(-1)) of treatment were less beneficial but still demonstrated significant (p < 0.001) improvement over the controls. The highest increases in major nutrient (NPK) uptake resulted from the humate foliar application in soil and from the fulvate foliar treatment in sand culture, which were well correlated with increased fresh/dry biomass of shoots and fruits. The results from this study demonstrate that both the K-fulvate and K-humate commercial products derived from lignite can potentially be employed to improve and sustain soil fertility, increase crop productivity and yield, and improve/correct plant nutrient deficiency by foliar applications during growth.
机译：进行了温室实验，探讨了两种商业褐煤衍生的含腐殖质物质（K-HUMATE和K-FULVATE）对土壤和砂培养的番茄产量和营养吸收的影响。番茄的种子（阿卡迪亚CV。田野Busm）种植在装有土壤和砂介质的盆中，并用基本的营养溶液（对照）和两种水平的K-Humate和K-Fulvate（相当于0,8和80）进行预处理L HA〜（-1））：低速率和高速率。仅使用低速率包括叶酸治疗。测量植物生长反应，如新鲜/干生物质所示，并将宏观和二次营养素（N，P，K，Ca，Mg，S）掺入芽中。 K-Humate和K-Fulvate对生长培养基和叶面治疗施用的低速率（8L Ha〜（-1））导致新鲜/干生物质的芽和水果和养分摄取增加了显着（P <0.001） 。治疗的高速率（80L Ha〜（-1））的效果不那么有益，但仍然表现出对照对照的显着（p <0.001）。主要营养素（NPK）摄取的最高增加是由于土壤中的腐蚀叶面和砂培中的富含叶面治疗，与枝条和水果的新鲜/干生物量增加良好相关。本研究的结果表明，来自褐煤的K-Fulvate和K-Humate商业产品均可用于改善和维持土壤肥力，增加作物生产力和产量，并通过生长期间通过叶面应用提高/矫正植物养分缺乏。

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