Development of nutrient solution for Chenopodiaceae leaf vegetables based on nutrient-water absorption rate and cation ratio.

摘要

Nutrient solution for various Chenopodiaceae leaf vegetables was developed. Various strength (1/2, 1, and 3/2) of nutrient solution recommended by National Horticultural Research Institute, Korea was applied to the crops in deep flow technique system for 27 days. Growth of 'Atras' spinach, 'Detroit Dark' beet, and 'Swiss' red chard was highest in the treatment of 3/2 strength. The proper constitution of nutrient solution for the Chenopodiaceae leaf vegetables was 11.0 N, 2.5 P, 8.0 K, 2.0 Ca, and 2.0 me/litre Mg. The crops were grown two times in March and September to examine the appropriateness of the nutrient solution. Relative growth rate and the amount of ascorbic acid treated with the nutrient solution were increased by 1.1-1.4 and 1.1-1.2 times, respectively, and the amount of chlorophyll was increased by 1.0-1.2 times..