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溶液培养是植物营养研究的一项极为重要的技术,植物生长的必需元素就是用液培法逐一发现的。由于溶液培养与土壤培养相比有许多独特的优点,从本世纪三十年代开始,这项技术在一些国家逐渐进入商业性作物生产并取得了巨大经济效益。与此同时,液培方法的改进也受到广泛的重视。这里向大家介绍一种植物液培新方法营养薄层技术(Nutrient Film Technique,以下简称NFT)。NFT即用流动的完全营养液薄层培养植物。这项技术和早先溶液罐培养的相似之处是二者都不需要非活性物质支撑根系,但运用NFT,根系从不断循环流动而又有涨有落的营养液薄层中吸取养料且可与空气接触,吸收氧气,解决了溶液罐培养的通气问题。荷兰植物生理学研究中心的H.C.E.de Stigter首先提出用循环流动营养液培养植物的想法,七十年代,由英国温室物研究所的Cooper,A与美国佛罗里达州的一家公司联合设计
Solution culture is a very important technology in plant nutrition research. The essential elements of plant growth are found by liquid culture method one by one. Since solution culture has many unique advantages over soil culture, the technology has gradually entered commercial crop production in some countries and made significant economic gains since the 1930s. At the same time, the improvement of liquid culture method has also received extensive attention. Here to introduce a new method of plant liquid culture nutrition thin layer technology (Nutrient Film Technique, hereinafter referred to as NFT). NFT is a fully nutrient solution that flows in thin layers and plants are grown. This technique is similar to previous solution tank cultures in that neither requires an inactive material to support the root system, but using NFT, the root draws nutrients from a thin, constantly flowing, Air contact, absorption of oxygen, to solve the problem of ventilation ventilation tank solution. H.C.E. de Stigter from the Dutch Center for Phytophysiology first proposed the idea of growing plants with a circulating nutrient solution. In the 1970s, Cooper, A of the British Greenhouse Institute co-designed a plant in Florida, USA