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首页> 外文期刊>Advances in Horticultural Science >Growth, flower production and mineral nutrition in gerbera (Gerbera jamesonii H. Bolus) plants grown in substrate culture with and without nutrient solution recycling
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Growth, flower production and mineral nutrition in gerbera (Gerbera jamesonii H. Bolus) plants grown in substrate culture with and without nutrient solution recycling

机译：在有或没有营养液再循环的情况下，在基质培养中生长的非洲菊（Gerbera jamesonii H. Bolus）植物的生长，花卉生产和矿物质营养

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摘要

The aim of this work was to investigate if gerbera plants show significant differences in growth and flower production when grown in two different soilless growing systems, with and without nutrient solution recycling. Several parameters were measured and calculated: dry matter production and allocation, flower yield, quality and mineral nutrition. Growth indices did not show significant differences between the two systems. Nutrient concentration inside the substrate was lower in the closed system,possibly due to recycling of nutrient solution. Analysing mineral contents in dry matter luxury consumption of Nitrogen, Phosphorus and Potassium was found in the open growing system, but it did not have an effect on production and quality of flowers. Total flower production was 12.5 per plant, while diameter and stem length were, respectively, 10-12 and 40 cm in both systems. Moreover, the amount of nutrient lost per year was calculated measuring the nutrient concentrations in the drainage solution. Results showed that about 93 N, 6.8 P, 165 K and 107 Ca Kg centre dot ha~(-1) per year are released into the environment.
机译：这项工作的目的是调查非洲菊植物在两种不同的无土栽培系统（有和没有营养液再循环）下生长时，在生长和花卉生产上是否显示出显着差异。测量和计算了几个参数：干物质的生产和分配，花的产量，质量和矿物质营养。增长指数没有显示出两个系统之间的显着差异。在封闭系统中，底物中的营养浓度较低，这可能是由于营养液的循环利用所致。在开放式种植系统中分析了氮，磷和钾的干物质奢侈消费中的矿物质含量，但对花的产量和质量没有影响。两种植物的总花产量为每株植物12.5，而直径和茎长分别为10-12和40 cm。而且，计算排水溶液中营养物的浓度，计算每年的营养物损失量。结果表明，每年大约有93 N，6.8 P，165 K和107 Ca Kg中心点ha〜（-1）释放到环境中。

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