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Utilization of deep seawater of hydroponics of vegetables

机译：蔬菜深层水培利用

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摘要

The present research was carried out to obtain necessary data for effective uses of deep seawater in hydroponics of vegetables. NaCl was removed from deep seawater by electrodialysis using a selective membrane cartridge for exchange of monovalent ions. The electrodialyzed deep seawater in an electric conductivity range of 5 to 25 dS/m was then used to prepare nutrient solution for hydroponics of spinach. The yield and contents of nutritional compounds of spinach were investigated. Experimental results showed that for the electrodialyzed deep seawater, potassium and sodium concentrations could be expressed as linear functions of electric conductivity in the range of 10 to 50 dS/m. Saline obstacle to the growth of spinach was negligible if deep seawater was dectrodialyzed to an electrical conductivity below 16 dS/m and then diluted with deionized water to 10 times in volume. The highest yield of spinach was obtained when deep seawater was electrodialyzed to 5 dS/m. In the case that deep seawater was electrodialyzed to 10 dS/m and then 11 times diluted, spinach had almost the same contents of protein, crude ash and reduced vitamin C as that related to deionized water.
机译：进行本研究是为了获得深海水有效地用于蔬菜水培的必要数据。使用选择性膜盒进行单价离子交换，通过电渗析从深海水中除去NaCl。然后将电渗析深度为5至25 dS / m的深海水用于制备菠菜水培的营养液。研究了菠菜的营养成分及其含量。实验结果表明，对于电渗析的深海水，钾和钠的浓度可以表示为电导率在10至50 dS / m范围内的线性函数。如果将深海水电分解至低于16 dS / m的电导率，然后用去离子水稀释至10倍体积，则对菠菜生长的盐分影响可以忽略不计。当深海水电渗析至5 dS / m时，菠菜的产量最高。如果将深海水电渗析至10 dS / m，然后稀释11倍，则菠菜的蛋白质，粗灰分和还原的维生素C含量几乎与去离子水相同。

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