Effects of Alternating Light Spectrum on the Mineral Element Level of Lettuce

Xiao-li CHEN; Li-chun WANG; You-li LI; Wen-zhong GUO

doi:10.3964/j.issn.1000-0593(2022)09-2813-05

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 9 >Page 2813 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 9, 2813 (2022)

Effects of Alternating Light Spectrum on the Mineral Element Level of Lettuce

Xiao-li CHEN^*, Li-chun WANG^1;, You-li LI^1;, and Wen-zhong GUO^{1; 2; *;}

Author Affiliations

1. Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China

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DOI: 10.3964/j.issn.1000-0593(2022)09-2813-05 Cite this Article

Xiao-li CHEN, Li-chun WANG, You-li LI, Wen-zhong GUO. Effects of Alternating Light Spectrum on the Mineral Element Level of Lettuce[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2813 Copy Citation Text

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处理	红蓝光交替间隔
R/B(5 m)	(R 5 m-B 5 m)…×96=16 h		暗期8 h
R/B(10 m)	(R 10 m-B 10 m)…×48=16 h		暗期8 h
R/B(15 m)	(R 15 m-B 15 m)…×32=16 h		暗期8 h
R/B(30 m)	(R 30 m-B 30 m)…×16=16 h		暗期8 h
R/B(60 m)	(R 60 m-B 60 m)…×8 =16 h		暗期8 h
R/B(2 h)	(R 2 h-B 2 h)…×4=16 h		暗期8 h
R/B(4 h)	(R 4 h-B 4h)…×2=16 h		暗期8 h
R/B(8 h)	(R 8 h-B 8 h)…×1=16 h		暗期8 h
RB	RB 8 h	暗期8 h	RB 8 h

Table 1. Light treatments of alternating red and blue light

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处理	日累积光量子数/(mol·m^-2)			日累积耗电量/MJ
处理	红光	蓝光	总光量子数	日累积耗电量/MJ
R/B(5 m)	5.18	0.576	5.76	3.30
R/B(10 m)	5.18	0.576	5.76	3.30
R/B(15 m)	5.18	0.576	5.76	3.30
R/B(30 m)	5.18	0.576	5.76	3.30
R/B(60 m)	5.18	0.576	5.76	3.30
R/B(2 h)	5.18	0.576	5.76	3.30
R/B(4 h)	5.18	0.576	5.76	3.30
R/B(8 h)	5.18	0.576	5.76	3.30
RB	5.18	0.576	5.76	3.30

Table 2. Daily integral photons and electric consumption in treatments

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元素	光谱波长 /nm	标准液浓度/(mg·L^-1)	相关系数r	RSD /%
K	766.490	0, 0.1, 1, 10, 100	0.998 9	0.41
P	213.617	0, 0.1, 1, 10, 100	0.998 6	0.39
Ca	317.933	0, 0.1, 1, 10, 100	0.999 8	0.23
Mg	279.077	0, 0.1, 1, 10, 100	0.998 3	0.63
Fe	238.204	0, 0.1, 0.4, 1, 4	0.999 2	0.38
Mn	257.610	0, 0.1, 0.4, 1, 4	0.998 9	0.74
Zn	213.857	0, 0.1, 0.4, 1, 4	0.998 8	0.55
Cu	324.752	0, 0.1, 0.4, 1, 4	0.999 1	0.53

Table 3. Wavelength, standard series solution, correlation coefficients and relative standard deviation

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处理	R/B(5 m)	R/B(10 m)	R/B(15 m)	R/B(30 m)	R/B(60 m)	R/B(2 h)	R/B(4 h)	R/B(8 h)	RB
K	70.74a	55.08c	71.28a	64.89b	56.97c	65.68b	55.52c	70.34a	65.47b
P	7.67ab	7.52ab	7.02ab	6.51b	8.39a	7.95ab	7.79ab	7.51ab	8.10a
Ca	12.57a	11.75ab	10.99b	10.96b	12.80a	12.20a	12.21a	11.83ab	12.89a
Mg	4.04b	4.79a	3.15c	3.60c	4.65a	3.76c	4.38ab	3.48c	4.12b

Table 4. The content of macroelements in Lactuca sativa exposed to different alternating spectrum

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处理	R/B(5 m)	R/B(10 m)	R/B(15 m)	R/B(30 m)	R/B(60 m)	R/B(2 h)	R/B(4 h)	R/B(8 h)	RB
Fe	219.28a	136.15bc	161.40b	118.29c	126.49c	157.67b	157.90b	145.83bc	142.89bc
Mn	171.78a	108.27d	124.06c	108.62d	146.70b	123.79c	175.26a	126.22c	121.68c
Zn	22.24b	19.79bc	21.54b	19.18bc	20.68b	22.81b	18.60c	33.24a	21.59b
Cu	2.64bc	3.05b	1.63c	2.63bc	3.05b	1.93c	2.60bc	5.15a	2.53bc

Table 5. The content of microelements in Lactuca sativa exposed to different alternating spectrum

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处理	单株地上部鲜重/ g	单株地上部干重/ g	单位干物质所需的光子数/ (mol·g^-1)	单位干物质所消耗的电能/ (MJ·g^-1)
R/B(5 m)	89.19bc	3.97b	2.32b	1.33b
R/B(10 m)	98.43b	3.81b	2.42b	1.39b
R/B(15 m)	103.74b	4.80ab	1.92bc	1.10c
R/B(30 m)	115.50ab	5.06a	1.82c	1.04c
R/B(60 m)	109.54b	4.48ab	2.06b	1.18bc
R/B(2 h)	115.46ab	4.79ab	1.92bc	1.10c
R/B(4 h)	125.82a	5.32a	1.73c	0.99c
R/B(8 h)	112.34ab	4.41ab	2.09b	1.20bc
RB	75.18c	2.83c	3.25a	1.86a

Table 6. The shoot biomass of Lactuca sativa and the consumption of photon and electricity in different alternating spectrum treatments

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处理	光能利用率/%	电能利用率/%
R/B(5 m)	4.58b	1.50b
R/B(10 m)	4.39b	1.44b
R/B(15 m)	5.54ab	1.82ab
R/B(30 m)	5.84a	1.92a
R/B(60 m)	5.17ab	1.70ab
R/B(2 h)	5.52ab	1.81ab
R/B(4 h)	6.13a	2.01a
R/B(8 h)	5.09ab	1.67ab
RB	3.27c	1.07c

Table 7. The energy use efficiency of Lactuca sativa in different alternating spectrum treatments

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处理	R/B(5 m)	R/B(10 m)	R/B(15 m)	R/B(30 m)	R/B(60 m)	R/B(2 h)	R/B(4 h)	R/B(8 h)	RB
K	280.84b	209.85c	342.15a	328.36a	255.23b	314.59ab	277.60b	310.21ab	185.29c
P	30.43bc	28.66c	33.69b	32.94b	37.59a	38.06a	38.93a	33.13b	22.91c
Ca	49.89bc	44.74bc	52.73b	55.46ab	57.33ab	58.42ab	61.05a	52.16 b	36.48c
Mg	16.06bc	18.26b	15.10c	18.21b	20.85a	18.00b	21.92a	15.35c	11.66d

Table 8. The accumulation of macroelements in Lactuca sativa exposed to different alternating spectrum

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处理	R/B(5 m)	R/B(10 m)	R/B(15 m)	R/B(30 m)	R/C(60 m)	R/B(2 h)	R/B(4 h)	R/B(8 h)	RB
Fe	870.55a	518.73c	774.71ab	598.53bc	566.67bc	755.23ab	789.50ab	643.11b	404.38d
Mn	681.95b	412.50cd	595.49bc	549.64c	657.23b	592.95bc	876.28a	556.63c	344.34d
Zn	88.28bc	75.40c	103.39b	97.03b	92.66b	109.25b	93.00b	146.58a	61.09d
Cu	10.50b	11.61b	7.84c	13.28b	13.67b	9.26bc	13.01b	22.72a	7.16c

Table 9. The accumulation of microelements in Lactuca sativa exposed to different alternating spectrum

Xiao-li CHEN, Li-chun WANG, You-li LI, Wen-zhong GUO. Effects of Alternating Light Spectrum on the Mineral Element Level of Lettuce[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2813

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