In this experiment, we used four kinds of LED lights with different red and blue light ratio(R/B=3:1; 4:1; 5:1; 7:1), and the white light was used as the control. The method of principal component analysis was used to evaluate the effects of different ratios of red light to blue light (R/B) on the growth and nutrient quality of Chinese chive.The results showed that thevalues, including plant height, stem diameter, leaf width, dry weight, soluble protein content, soluble sugar content, crude fiber content and yieldof Chinese chive, were significantly higher than those of other treatments at the treatment using 7:1 of R/B;While the contents of VC and allicin were significantly higher than those of other treatments. The plant height, stem diameter, leaf width, chlorophyll content and yield of Chinese chive were increasing, while the content of VC was the opposite. The results of principal component analysis showed that R/B was 7:1 in the total score of 1.44, 2.17, 1.35, 2.00, respectively, which were significantly higher than those of other treatments. The sequence of the average score of different treatments was RB4> RB2> RB3> RB1> CK. Therefore, It is an important decision that choosing 7:1 of R/B to improve the growth and nutritional quality of Chinese chive in northern China.

Ying Zhai. Effects of the LED Source on Growth and Nutritional Quality of Chinese Chive in Different Cutting Stages and their Comprehensive Evaluation. International Journal of Frontiers in Sociology (2021), Vol. 3, Issue 15: 128-137. https://doi.org/10.25236/IJFS.2021.031517.

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