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首页> 外文期刊>Scientia horticulturae >Effect of growing media composition, compaction and periods of anoxia on the quality and keeping quality of potted roses (Rosa sp.)
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Effect of growing media composition, compaction and periods of anoxia on the quality and keeping quality of potted roses (Rosa sp.)

机译：生长培养基成分，压实度和缺氧时间对盆栽玫瑰（Rosa sp。）品质和保持品质的影响

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摘要

The significance of growing media composition on plant growth and subsequent keeping quality was examined with special emphasis on variation in oxygen content in the media. The oxygen content was determined in situ by fixed oxygen sensors and by a novel approach determining oxygen profiles by microsensors. In the first experiment, 6 different peat based growing media were examined: (1) standard fertilised peat mix for rose production, (2) fertilised peat with no amendments, (3) fertilised peat with 6 kg m(-3) clay powder, (4) fertilised peat with 6 kg m(-3) clay powder and 40 kg m(-3) 2-4 mm clay granules. (5) fertilised peat with 40 kg m(-3) 2-4 mm clay granules and (6) fertilised peat and 25% coir (v/v). In this experiment, the oxygen content was determined by fixed oxygen sensors 1 cm above the bottom of the container during plant growth. In the following experiment, 3 different media were examined: (1) standard fertilised peat mix (10% perlite) for rose production, (2) fertilised peat with no perlite and (3) fertilised peat with 25% perlite (v/v), compacted 0%, 20% or 40%. Here, oxygen profiles from the top to the bottom of the container during irrigation cycles were determined by microsensors. After production, the quality (fresh and dry weight, number of flowers and buds and number of shoots) as well as the keeping quality of the plants were determined. The sensors placed at one point revealed oxygen fluctuations with short periods of low oxygen availability corresponding to fluctuations in water content during the irrigation cycles. The microsensors provided a more detailed description of oxygen distribution in the media, showing periods of hypoxia or even anoxia in the bottom of the pots after irrigation. Despite substantial differences in growing media composition and periods of anoxia in the bottom of the containers no effect was seen on plant quality or the subsequent keeping quality
机译：检查了培养基组成对植物生长和随后保持品质的重要性，并特别强调了培养基中氧含量的变化。氧含量由固定的氧传感器和通过微传感器确定氧分布的新颖方法确定。在第一个实验中，检查了6种不同的基于泥炭的生长培养基：（1）用于生产玫瑰的标准施肥泥炭混合物;（2）没有改良剂的施肥泥炭;（3）含6 kg m（-3）粘土粉的施肥泥炭; （4）用6千克m（-3）粘土粉和40千克m（-3）2-4毫米粘土颗粒施肥的泥炭。 （5）受精泥炭，含40 kg m（-3）2-4 mm粘土颗粒，以及（6）受精泥炭和25％椰壳纤维（v / v）。在该实验中，在植物生长过程中，通过容器上方1 cm处的固定式氧气传感器确定氧气含量。在以下实验中，检查了3种不同的介质：（1）用于生产玫瑰的标准施肥泥炭混合物（10％珍珠岩），（2）没有珍珠岩的施肥泥炭和（3）含25％珍珠岩（v / v）的施肥泥炭，压缩0％，20％或40％。在这里，灌溉周期中容器顶部到底部的氧气分布由微传感器确定。生产后，确定其质量（鲜重和干重，花和芽的数量以及枝条的数量）以及植物的保鲜质量。放置在某一点的传感器显示出氧气的波动，其中短时间的低氧气利用率对应于灌溉周期中的水含量波动。微型传感器提供了培养基中氧气分布的更详细描述，显示了灌溉后盆底缺氧甚至缺氧的时期。尽管容器底部的培养基组成和缺氧时间存在很大差异，但对植物质量或随后的保存质量没有影响

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