Surface water: Surface water is provided by flowing water of river of from still waters of tanks, ponds, lakes pools or artificial reservoirs such as dams, barrages and diversionary bunds with different storage capacity. pl Komisja Europejska, Dyrekcja Generalna ds. The term 'surface irrigation' refers to a broad class of irrigation methods in which water is distributed over the field by overland flow. Water is applied to the top end of each furrow and flows down the field under the influence of gravity. Surface irrigation is often referred to as flood irrigation, implying that the water distribution is uncontrolled and therefore, inherently inefficient. Ajouter de nouveaux contenus Add à votre site depuis Sensagent par XML. Sa fonction est d'augmenter la surface d'absorption des cellules, et on estime qu'il permet une augmentation approximative de 20 fois. 2. Surface irrigation is where water is applied and distributed over the soil surface by gravity. En savoir plus, File:Irrigation canal digging Afghanistan.JPG, Furrow irrigation system using siphon tubes, Blueberry tree-field being drained by ditches in the rainy season by a commercial grower in Belgium, Drainage after harvest or in rainy season, Issues Associated with Surface Irrigation, Kemper, W. D.; Trout, T. J., Humpherys, A. S., and Bullock, M. S. (1988). Thanks for your vote! Indexer des images et définir des méta-données. Define Surface Irrigation. Les canaux distribuent l'eau à d'autres canaux secondaires jusqu'aux parcelles. A flow is introduced at … It is by far the most common form of irrigation throughout the world and has been practiced in many areas virtually unchanged for thousands of years. Participer au concours et enregistrer votre nom dans la liste de meilleurs joueurs ! We truly appreciate your support. In all the surface methods, Surface irrigation Uncontrolled flooding, Border strip,Check,Basin,Furrow method. Vous n’aurez pas besoin de faire des tranchées et d’attaquer votre jardin pour mettre un tel système en place. The advance phase refers to that length of time as water is applied to the top end of the field and flows or advances over the field length. Surface irrigation is the introduction and distribution of water in a field by the gravity flow of water over the soil surface. of irrigation, water is either ponded on the soil or allowed to flow continuously over the soil surface for the duration of irrigation. Type of crop 24 2.5.3. Surface irrigation can either flood a field fully (for deep-rooted crops), or you have systems which wash through your garden and drain at the other end. Also known as subirrigation. ), outre l'arrosage manuel (arrosoir, seau, etc.) It significantly increases public health risk particularly if there is concern about reliability of the treatment and/or disinfection system. Drip irrigation must be run for a half-hour for it to require result. Fixer la signification de chaque méta-donnée (multilingue). Surface irrigation comes in three major types; level basin, furrow and border strip. It is normally used when conditions are favorable: mild and r… The soil acts as the growing medium in which water is stored and the conveyance medium over which water flows as it spreads and infiltrates. ○   Lettris De plus, vous profitez immédiatement d’un arrosage pour vos plantations. – Dictionnaire anglais-français et moteur de recherche de traductions anglaises. L'encyclopédie française bénéficie de la licence Wikipedia (GNU). C’est un réseau de conduites sous pression portant des asperseurs ou des buses, conçu pour projeter des jets ou pulvériser de l’eau sous forme de fine gouttes à la surface du sol. Les cookies nous aident à fournir les services. Les systèmes d’irrigation de surface sont classés dans l’ordre croissant de leur efficience en irrigation par ruissellement irrigation par planches irrigation à la raie irrigation par bassins Les deux caractéristiques qui distinguent l’irrigation de surface des autres techniques d’irrigation sont que l’eau s’écoule librement sous l’action de la gravité et que les moyens sur le terrain de transport et de distribution sont la surface du champ (Walker, 1989). Nous contacter Copyright © 2000-2016 sensagent : Encyclopédie en ligne, Thesaurus, dictionnaire de définitions et plus. irrigation (n.f.) Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. Surface Irrigation is an … The water is distributed directly onto the basic system of the plant. Cookies help us deliver our services. As the inflow ceases the water will continue to runoff and infiltrate until the entire field is drained. DESIGN PARAMETERS FOR THE INFIELD WORKS 25 3.1. Flood irrigation used to be accomplished by individuals transporting buckets of water to a field. Read More. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. Surface irrigation (Figure 12.1) of secondary treated and disinfected effluent is permitted in NSW. 2.5.5. irrigation de surface translation in French-Polish dictionary. Web.  | Dernières modifications. This Fact Sheet provides general information on key aspects of this historic technology that is still in use in many parts of the world. Labour availability 24 3. réservé aux très petites surfaces. Apport d'eau réalisé sur un terrain cultivé ou une prairie en vue de compenser l'insuffisance des précipitations et/ou des réserves hydriques du sol et, ainsi, de permettre le plein développement des plantes. Basin irrigation is the most common form of surface irrigation, particularly in regions with layouts of small fields. The recession phase describes the time period while the water front is retreating towards the downstream end of the field. Criteria for the selection of the surface irrigation method 24 2.5.1. Each method includes several variations, only the more common of which are considered here. This results in poor uniformity with high application at the top end with lower application at the bottom end. Vérifiez la prononciation, les synonymes et la grammaire.  | Privacy policy Surface irrigation is defined as the group of application techniques where water is applied and distributed over the soil surface by gravity. How to say surface irrigation in sign language? 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