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首页> 外文期刊>Acta Horticulturae >Alternative nursery management systems: closed-loop and high retention mat.
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Alternative nursery management systems: closed-loop and high retention mat.

机译：替代性的托儿所管理系统：闭环和高保持性垫子。

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Current container-grown plant production practices utilize high volumes of both irrigation and fertilization to maximize plant growth. Inefficiencies of these management practices may lead to high chemical externalities, with environmental damage. Moreover in the upcoming future the water availability for nursery irrigation is destined to decrease. As a consequence the nursery industry must increase water use efficiency for plant production. In order to test different nursery management systems an experiment was conducted at Fondazione Minoprio in 2006. Nine thousand plants of three cultivars of Rosa hybrida ('Cubana', 'Innocentia' and 'Pink Emily') were cultivated in 1,5 L containers. Three different nursery management systems, realized in three nurseries of 300 m2 each-one, were compared. The first nursery was managed in a traditional way: overleaf irrigation with static sprinklers and without water recovery. Plants were fertilized with a controlled-release fertilizer added to the growing medium. The second nursery was a closed-loop system: overleaf irrigation with static sprinklers and recovers of the excess of solution in a 50 m3 artificial basin for reuse. Plants were fertirrigated. The third nursery was realized with a high water retention mat (AquamatTM), in which the nutrient solution is served out directly in the mat and released to plants by capillarity. Water consumption for each nursery was recorded weekly during the trial and at the end of the experiment, and both shoot and root biomasses were measured. For each cultivar shoot biomass resulted higher where the retention mat was used, while no differences were observed between traditional and closed-loop management. Greater root biomass was observed where the traditional management was used. The closed-loop system allowed 11% of water saving, while the sub-irrigation system allowed saving 41% of water if compared to the traditional system.
机译：当前容器生产的植物生产实践利用大量的灌溉和施肥来最大化植物的生长。这些管理实践的低效率可能导致较高的化学外部性，并破坏环境。此外，在即将到来的未来，苗圃灌溉的水供应必定会减少。结果，苗圃业必须提高植物生产的用水效率。为了测试不同的育苗管理系统，2006年在Fondazione Minoprio进行了一项实验。种植了三个品种的'Rosa hybrida （'Cubana'，'Innocentia'和'Pink Emily'）9,000种植物在1.5升容器中。比较了三个不同的托儿所管理系统，分别在三个分别为300 m 2 的托儿所中实现。第一个苗圃以传统方式进行管理：使用静态喷头的无叶灌溉，而无需回水。用添加到生长培养基中的控释肥料对植物施肥。第二个育苗室是一个闭环系统：使用静态喷头进行下叶灌溉，并在50 m 3 人工盆中回收多余的溶液，以供重复使用。对植物进行灌溉。第三个育苗场是使用高保水垫（Aquamat TM ）实现的，其中营养液直接在垫中投放，并通过毛细作用释放到植物中。在试验期间和实验结束时每周记录每个苗圃的耗水量，并测量茎和根生物量。在使用保留垫的情况下，每个品种的枝条生物量都较高，而传统和闭环管理之间没有发现差异。使用传统管理方法时，根系生物量更大。与传统系统相比，闭环系统可节水11％，而子灌溉系统可节水41％。

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