| 摘要 |
Soil-less production of plants is especially for producing green fodder where in the rhythm of the harvesting period one of the fractions, determined by the quotients of harvest periods and vegetation period, of the synthetic budding and plant pick-up region is so used in the form of two or more functional units in a frame storey, which have two build-on planes close together, that build-on shells fitted with overflow and drainage valves and drain pipes and supplied with plant sub-soil and seed are inserted into the bottom build-on plane. These shells are then covered with a cover plate. Specifically, on termination of the first half of the vegetation period i.e. at the end of the germination and growth stage, the cover plates and drain pipes are removed and the shells are transferred into the top plane while turning them horizontally through 180 deg. |
