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首页> 外文期刊>The Journal of Horticultural Science & Biotechnology >Impact of fertiliser level on plant growth, plant shape, and physiological leaf damage in two cultivars of Aechmea characterised by crassulacean acid metabolism.
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Impact of fertiliser level on plant growth, plant shape, and physiological leaf damage in two cultivars of Aechmea characterised by crassulacean acid metabolism.

机译：施肥水平对两个以鳄梨酸代谢为特征的香椿（Aechmea）品种的生长，植物形态和叶片生理损伤的影响。

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摘要

The efficacy of different fertiliser levels was evaluated in terms of plant growth, plant shape, and leaf quality. Experiments were conducted on two cultivars of Aechmea of known sensitivity (high and low, respectively) to physiological leaf damage. Plants were grown under two fertiliser levels (a fertigation solution of 1.2 mS cm-1, or a fertigation solution of 2.4 mS cm-1) over a 9-month treatment period. In general, the lower level of fertiliser resulted in more desirable, compact plants, with leaf length as the major parameter determining plant shape. The higher level of fertiliser improved the growth rate significantly, but also increased the risk of leaf quality problems. The extent of this effect was strongly cultivar-dependent. In practice, growers will have to compromise between plant shape and leaf quality on the one hand, and growth rate on the other. Based on this work, either of two plant-related parameters can be used to evaluate the risk of leaf quality problems when changing fertiliser levels: (i) chlorenchymal cell dimensions at the leaf anatomical level, or (ii) turgor pressure at the leaf physiological level.
机译：根据植物生长，植物形状和叶片质量评估了不同肥料水平的功效。在已知对生理性叶损伤的敏感性（分别为高和低）的两个 Aechmea 品种上进行了实验。在9个月的处理期内，使植物在两种肥料水平下生长（1.2 mS cm -1 的施肥溶液或2.4 mS cm -1 的施肥溶液） 。通常，较低的肥料含量导致更理想的紧凑型植物，叶片长度是决定植物形状的主要参数。较高的肥料水平可以显着提高生长速度，但同时也增加了叶片质量问题的风险。这种作用的程度强烈依赖于栽培品种。在实践中，种植者一方面必须在植物形状和叶片质量以及另一方面的生长速度之间做出折衷。基于这项工作，在改变肥料水平时，可以使用两个与植物相关的参数之一来评估叶片质量问题的风险：（i）在叶片解剖水平上的氯间充质细胞尺寸，或（ii）在叶片生理上的膨胀压力水平。

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