Practical use of horticulturalcropcultivation at membrane culture by use of functional membrane

在园艺作物的栽培中，养分和水分的供应控制是重要的质量控制。在现有的培养装置中，营养物和水的供应可以被极端地控制或根本不控制。反渗透膜法（R.O.）膜是一种半透膜，它允许水自由通过，离子化合物缓慢通过，但大分子除外。利用这种膜，我们开发了培养系统。该系统由溶液和漂浮在溶液上的容器构成。容器高约2cm，底部用R.O.膜密封。将植物直接置于该容器中的R.O.膜上。水和养分从溶液通过反渗透膜供给植物。水和养分的供应由溶液中的水势和养分浓度控制。可以通过使用高渗透压溶液来维持根区中的水分亏缺。在实验中，用高渗透压溶液完全防止了彩叶草（Coleus blumei Benth.）在室内环境中的细长生长。使用该系统，仅使用去离子水，将彩叶草植物在室内保持6个月而没有细长生长。有一种可能性，通过使用这个系统，植物通常不被用作室内植物由于细长的生长。另外，由于不需要培养基，因此可以减轻栽培盆的重量和尺寸，通过安装在培养容器上的膜，可以除去外部的微生物（主要由铝组成）和微生物，并可以向培养容器中提供新鲜的营养物和水。我们通过这种方法提供了含有蔗糖的新鲜培养基，并在无菌的培养容器中，在未灭菌的条件下生长出健康的植株。通过使用这种培养系统，培养基（含有植物激素）可以被更新而无需重新种植。

The nutrients and water supply control for quality control is important in the cultivation of the gardening crops. In an existing cultivation device, The nutrients and water supplycan be controlled extremely or not at all. It is sure to be able to keep theoretically accurate with membrane culture which Reverse osmosis(R.O.)membrane is a semipermeable membrane which allows water to pass freely and ionic compounds slowly except large molecules. By using this membrane, we developed cultivation system. This system is constructed of a solution and vessel which floats on a solution. The vessel is about 2cm in height and the bottom is sealed with the R.O.membrane. Plant is placed directly on the R.O.membrane in this vessel. Water and nutrients are supplied to the plant from the solution through the R.O.membrane. Water and nutrient supply is controlled by the water potential and nutrient concentration in the solution. It is possible to maintain a water deficit in the root zone by using a high osmotic pressure solution. In an experiment, with a high osmotic pressure solution, spindly growth in an indoor environment was completely prevented in coleus(Coleus blumei Benth.). Using this system, coleus plants were maintained without spindly growth for 6 months indoors, using only deionized water. There is a possibility that by using this system, plants that are not normally used as indoor plants due to spindly growth. Additionally, weight and size of the planting pot can be reduced since no culture medium is required.Through the membrane fitted to the culture vessel, microbestatics(mainly composed aluminum)and microbes on the outside are removed and fresh nutrients and water can be supplied into culture vessels. We supplied the fresh culture medium containing sucrose by this method and grew healthy plants in the sterilized culture vessel, under unsterilized conditions. By using this culturing system the medium(contained Phyto-hormones)can be refreshed without replanting.