[Control of nutrition of greenhouse cucumbers in recirculating nutrient solution by a simulation model]

absorption de substances nutritives anbausystem azote besoin nutritionnel cucumis sativus cultivo sin tierra culture sans sol entwicklungsstadium etapas de desarrollo de la planta fertilisation fertilizer application fosforo gurke modele modell modelos models necesidades de nutrientes nitrogen nutrient solutions nutrient uptake nutritional requirements phosphore phosphorus plant developmental stages potasio potassium soilless culture soluciones nutritivas solution nutritive