Apparatus for producing seedlings and method of producing...

A - Human Necessities – 01 – G

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A01G 1/06 (2006.01) A01G 7/00 (2006.01) A01G 9/24 (2006.01)

Patent

CA 2529096

It is intended to provide an apparatus for producing seedlings and a method therefor whereby, in producing grafted seedlings of fruit vegetables, a process from the culture of their stocks (rootstocks and scions) to welding after the grafting can be accomplished in a consistent process at low cost. Rootstocks and scions are nursed on multi-staged seedling culture shelves 3 installed in a closed-type structure surrounded by light-interceptive thermally insulating walls, and then these rootstocks and scions are joined to each other to produce grafted seedlings 8. Then, these grafted seedlings 8 are placed on shelf boards 3a of the seedling culture shelves and covered with a light-transmitting shield 9 provided with vent holes 15, and light of a predetermined luminous intensity is projected onto these grafted seedlings from fluorescent lamps 5 through the light-transmitting shield to weld the grafted seedlings 8. The relative humidity in the light-transmitting shield immediately after the grafting is raised by the evaporation of moisture from the rootstocks and the scions, and the rooting of the rootstocks and the scions is thereby facilitated. When the photosynthesis is stimulated, gas exchange between the carbon dioxide gas-containing atmosphere within the closed type structure and the atmosphere within the light-transmitting shield are accomplished to replenish the inner space of the light-transmitting shield with carbon dioxide gas.

L'invention concerne un dispositif et un procédé de culture de semis qui permet de cultiver des semis de fruits et légumes greffés selon un procédé peu coûteux qui commence par la phase de sélection de plantes cultivées (porte-greffes et greffons) et qui se poursuit jusqu'à la phase post-greffe. Les porte-greffes et greffons sont cultivés sur plusieurs étagères de culture (3) placées dans une structure fermée et entourée de parois calorifuges et étanches à la lumière. Ces porte-greffes et greffons sont reliés ensemble pour former des semis greffés (8) lesquels sont ensuite placés sur la plaque (3a) de l'étagère de culture et recouvert d'une couverture perméable à la lumière (9) pourvue d'évents (15). Les semis greffés (8) sont exposés au rayonnement d'une lampe fluorescente (5) à une intensité lumineuse précise à travers la couverture perméable à la lumière dans une phase post-greffe. Immédiatement après la greffe, l'humidité relative de la couverture perméable à la lumière augmente en raison de l'évaporation d'eau émanant des porte-greffes et greffes, ce qui favorise la prise des greffes sur les porte-greffes. Lorsque les plantes effectuent intensément la photosynthèse, les échanges gazeux, via les évents, augmentent entre l'atmosphère chargée de gaz carbonique dans la structure fermée et l'atmosphère dans la couverture perméable à la lumière, ce qui a pour effet de réapprovisionner l'atmosphère de la couverture perméable à la lumière en gaz carbonique.

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