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首页> 外文期刊>Acta Horticulturae >Should we use soilless media in organic greenhouses?
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Should we use soilless media in organic greenhouses?

机译：我们应该在有机温室中使用无土媒体吗？

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EC regulation 834/2007 suggests that growing in soil is the only acceptable method in Organic agriculture (OA) both in open field and in greenhouses. Therefore, the use of growing media in OA is forbidden in EU countries and in Israel. This is not thecase, however, in China, the US, Canada, Australia, New Zealand, the Gulf States and few other countries. Few exceptions exist even within Europe: several Scandinavian countries allow greenhouse growers to grow crops in natural substrates, assuming thatcontainerized natural substrates are not inherently different from soil. Another acceptable exception, common to all EU countries, is the production of transplants and plants that are grown and sold in pots to the consumer. I intend to question this restriction and to show how, by changing it, organic greenhouses will benefit, without damaging the environment and the logic of OA. There are several main reasons why this regulation should be reconsidered: (1) in many parts of the world, fertile soils arerare or do not exist. Overcoming this infertility requires high fertilization levels, which in addition to its high cost, may lead to percolation and pollution of underground water. Leachates of container-grown plants, on the other hand, can be collected, treated and reused, thus leading to much high water- and nutrient-use efficiencies. (2) The possibility of greenhouse growers to maintain a proper rotation is very limited. This may lead to a rapid infestation of the soil with soil-borne pests and diseases. The few eradication tools available for organic growers are inefficient. By growing the crops in a containerized medium such infestation may he prevented, and, if occurs, the medium can be replaced. (3) By including mature composts, growing mediacan be fully suppressive to soil-borne diseases. (4) Unlike soil, growing in soilless media is weed-free.
机译：EC规则834/2007表明土壤中的生长是开放场和温室中的有机农业（OA）中唯一可接受的方法。因此，在欧盟国家和以色列中禁止在OA中使用生长媒体。然而，这不是在中国，美国，加拿大，澳大利亚，新西兰，海湾国家和少数其他国家。甚至在欧洲内部存在少数例外情况：几个斯堪的纳维亚国家允许温室种植者在天然基质中种植农作物，假设该天然底物与土壤固有不同。所有欧盟国家的另一个可接受的例外，是所有欧盟国家的移植和植物的生产，这些移植和植物在消费者上销售在盆中。我打算质疑这种限制，并展示如何通过改变它，有机温室将受益，而不会损坏环境和OA的逻辑。有几个主要原因，为什么这项规定应重新考虑：（1）在世界许多地方，肥沃的土壤剧烈或不存在。克服这种不孕症需要高施肥水平，除了其高成本之外，可能导致地下水的渗透和污染。另一方面，可以收集，处理和重复使用容器生长的植物的渗滤液，从而导致水和营养效率高得多。 （2）温室种植者保持适当旋转的可能性非常有限。这可能导致土壤与土壤和疾病的快速感染。有机种植者的少数消除工具效率低下。通过在容器中的培养基中生长作物，可能预防了这种侵扰，并且如果发生，则可以更换培养基。 （3）通过包括成熟的堆肥，生长的媒体综合症对土壤传播疾病完全抑制。 （4）与土壤不同，在无土媒体中生长是无杂草的。

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