Effects of Nutrient Solution Levels on the Growth and Mineral Element Absorption of Hydroponics Lettuce

doi:10.3969/j.issn.1000-6362.2018.09.005

Abstract

Abstract: The effects of Hoagland nutrient solution with different liquid levels (2, 3, 4, 5, 6cm) on the content and accumulation of ten mineral elements (K, P, Ca, Mg, Na, Fe, Mn, Zn, Cu, S) in lettuce hydroponically cultured in a plant factory were investigated in the present study. The results indicated that the biomass and photosynthetic pigment contents in lettuce shoot were the highest under the 4cm treatment, while the root length and root biomass increased with the enhancement of nutrient solution height. The contents of all mineral elements in lettuce were the highest under the treatment of 6cm. The accumulation of Fe and Mn in lettuce reached the largest value under 6cm treatment, while the accumulation of Ca, Mg, Na, Zn, Cu and S were all the highest under 4cm treatment, and the largest accumulation of K and P were obtained with 5cm treatment. Different production purposes can be achieved by adjusting the liquid level of nutrient solution during the actual production.

Key words: Lettuce, Plant factory, Liquid level, Biomass, Mineral element

ZHANG Wei-juan, GUO Wen-zhong, WANG Xiao-jing, LI Lin-zhi, LI Hai-ping, CHEN Xiao-li. Effects of Nutrient Solution Levels on the Growth and Mineral Element Absorption of Hydroponics Lettuce[J]. Chinese Journal of Agrometeorology, 2018, 39(09): 594-600.

References

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