基于单色光的植物光合响应曲线及其模型研究

王洪; 刘银春; 陈美香; 邱雯婷; 陈雄; 郭建

doi:10.19303/j.issn.1008-0384.2023.06.015

基于单色光的植物光合响应曲线及其模型研究

doi: 10.19303/j.issn.1008-0384.2023.06.015

王洪^1,,
刘银春^{1, 2, ,},
陈美香^{1, 2},
邱雯婷¹,
陈雄^{1, 3},
郭建¹

1.
福建信息职业技术学院物联网与人工智能学院，福建　福州　350003
2.
福建农林大学机电工程学院，福建　福州　350002
3.
福建江夏学院电子信息科学学院，福建　福州　350108

基金项目: 教育部高等职业教育创新发展行动计划（教职成厅函〔2019〕8号）

详细信息

作者简介:
王洪（1982 —），男，硕士，讲师，研究方向：农业光电子应用（E-mail：wizardwh@sina.com）

通讯作者:
刘银春（1954 —），男，教授，研究方向：农业光电子工程（E-mail：907500696@qq.com）

中图分类号: Q945
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- 文章访问数: 348
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-07
- 修回日期: 2022-11-30
- 网络出版日期: 2023-07-06
- 刊出日期: 2023-06-28

Light Response Curves and Photosynthesis Models on Plants Exposed to Monochromatic Lights

WANG Hong^1
,,
LIU Yinchun^{1, 2
, ,},
CHEN Meixiang^{1, 2},
QIU Wenting¹,
CHEN Xiong^{1, 3},
GUO Jian¹

1.
College of The Internet of Things and Artificial Intelligence, Fujian Polytechnic of In formation Technology, Fuzhou, Fujian　350003, China
2.
College of Mechanical and Electrical Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian　350002, China
3.
College of Electronics and Information Science, Fujian Jiangxia University, Fuzhou, Fujian　350108, China

摘要

摘要: 目的研究不同植物幼苗在多种单色光条件下的光合响应曲线及其数学模型，为植物工厂作物栽培架等现代农业种植设施的研发提供理论依据。方法应用植物特征光谱试验方法及其测试系统，获取10种植物幼苗的22种单色光的光合响应曲线；选择红椎与马褂木两个具有代表性的植物，得出对应单色光光合响应曲线的数学模型；根据渐近线型单色光植物光合响应曲线的特点提出准饱和点光强的概念及计算方法，再依据所测定的植物幼苗22种单色光的饱和点光强，比较理论计算值与实际测定值的偏差程度，并以此为基础绘制植物光合作用饱和点曲线。结果植物幼苗的光合响应曲线可分为两类，以红椎为代表的一类植物光合响应曲线呈渐近线型，这类曲线没有极值；以马褂木为代表的一类植物光合响应曲线则有拐点，这类曲线有极值。模型计算得到的准饱和点光强与实际测定的饱和点光强具有较高的拟合度，经过对数据的综合处理，获得对应的饱和点曲线和补偿点曲线。结论采用植物特征光谱试验方法及其测试系统可以得到植物在单色光条件下的光合响应曲线，揭示了不同植物光合作用的规律及特点。由此提出的植物光合响应数学模型与实测值具有较高拟合度，可作为研究分析植物光合作用现象的重要参考。
- 植物特征光谱 /
- 光合响应曲线 /
- 光合响应模型 /
- 饱和点光强 /
- 饱和点曲线
Abstract: Objective Mathematical models of the photosynthetic responses of plants exposed to monochromatic lights were constructed for the development of indoor agricultural cultivation. Method An experimentation was designed to generate varied wavelengths of monochromatic lights and test, measure, and construct a mathematical model for the photosynthetic responses of plants exposed to the light source. On seedlings of 10 different plant species grown under 22 varied monochromatic lights, the photosynthetic rates of the plants were measured to obtain light response curves (LRCs). Using Castanopsis hystrix and Liriodendron chinense (Hemsl.) Sarg as two representative plants, mathematical models were constructed. From the asymptotic linear curve, the light intensity at quasi-saturation point was calculated. Then, the calculated theoretical and measured empirical data were compared to test the validity of the prediction model. Result Of all the LRCs, there were two types—one of C. hystrix, which was asymptotic linear showing no plateau, and another of L. chinense, which had an inflection point. A high degree of fitting was found between the light intensity at quasi-saturation point calculated from the model and that measured empirically. After a data treatment, curves with light saturation and compensation points were obtained. Conclusion The specially designed monochromatic lights generating method and plant photosynthesis measuring system enabled a successful construction of the LRCs. The patterns and characteristics of the photosynthesis of different plants in response to the monochromatic lights varied. The high fitting on the photosynthetic response data between the values calculated from the mathematical model and those measured from the experiment suggested an applicability of the current methodology for studies on plant photosynthesis. Since the developed method and test system were not species-specific, they could be used universally for research on other plants. And using the mathematical model, optimal light wavelength and intensity at saturation point could be estimated for designing artificially controlled agriculture facilities such as “plant factories” for indoor mass crop cultivation.
- Plant characteristic spectrum /
- light response curve /
- photosynthetic response model /
- saturation point light intensity /
- saturation point curve

HTML全文

图 1 红椎的光合响应曲线

Figure 1. LRC of C. hystrix

下载: 全尺寸图片幻灯片

图 2 马褂木的光合响应曲线

Figure 2. LRC of L. chinense

下载: 全尺寸图片幻灯片

图 3 红椎和马褂木对3种不同波长的光合响应曲线

A、B、C分别表示波长为435、600、700 nm。

Figure 3. LRCs of C. hystrix and L. chinense exposed to lights of 3 different wavelengths

A, B and C represent wavelengths of 435 nm, 600 nm and 700 nm respectively.

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图 4 红椎与马褂木的饱和点曲线和补偿点曲线

Figure 4. Light saturation and compensation curves of C. hystrix and L. chinense

下载: 全尺寸图片幻灯片

表 1 多种单色光发生器产生的22种单色光

Table 1. Twenty-two monochromatic lights produced by light generating device

波长 Wavelength λ/nm	半峰全宽 Full width of half peak ∆λ/nm	波长 Wavelength λ/nm	半峰全宽 Full width of half peak ∆λ/nm
420	13.9	575	22.6
435	17.9	600	20.3
445	12.9	620	17.9
450	19.4	630	17
465	15.6	650	20.5
475	25	660	11.8
500	24.2	675	26.3
520	20.5	690	26.6
535	18.7	700	33.7
550	22.4	730	28.2
565	15.7	750	28.8

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表 2 红椎的光合响应曲线对应22个单色光的参数值

Table 2. Measurements related to 22 monochromatic lights on LRC of C. hystrix

波长 Wavelength λ/nm	P_nb	I_c/ （μmol·m⁻²·s⁻¹）	I_c′/ （μmol·m⁻²·s⁻¹）	α_λ/ （m²·s⁻¹·μmol⁻¹）	R²	波长 Wavelength λ/nm	P_nb	I_c/ （μmol·m⁻²·s⁻¹）	I_c′/ （μmol·m⁻²·s⁻¹）	α_λ/ （m²·s⁻¹·μmol⁻¹）	R²
420	3.45	5	12	0.015	0.995 2	575	3.14	15	14	0.01	0.995 8
435	3.47	10	13	0.013	0.996 4	600	3.45	10	15	0.013	0.990 9
445	3.5	10	14	0.012	0.993 8	620	3.45	10	14	0.015	0.990 1
450	3.09	10	14	0.013	0.993 6	630	3.51	15	14	0.013	0.993
465	3.12	15	17	0.013	0.996 8	650	3.44	15	15	0.016	0.991 7
475	2.83	10	12	0.013	0.997 2	660	3.37	10	12	0.015	0.998
500	3.13	15	12	0.011	0.995 8	675	3.28	10	11	0.014	0.996 3
520	3.51	15	13	0.013	0.985 4	690	2.81	10	6	0.007 4	0.988 7
535	3.95	15	16	0.012	0.993 1	700	3.33	25	25	0.007 8	0.991 5
550	3.31	15	17	0.011	0.994 7	730	3.59	30	24	0.007 8	0.987 4
565	4.47	15	12	0.006 9	0.998	750	5.64	25	20	0.002 2	0.987 5

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表 3 红椎的准饱和点光强实测值$ {I_{sat}} $与理论计算值$ {I'_{sat}} $的比较（$ {p'_n} = 0.001 $）

Table 3. Measured $ {I_{sat}} $ and theoretical $ {I'_{sat}} $ at quasi-saturation point of C. hystrix（$ {p'_n} = 0.001 $）

波长 Wavelength λ/nm	I_sat/ （μmol·m⁻²·s⁻¹）	I_sat’/ （μmol·m⁻²·s⁻¹）	波长 Wavelength λ/nm	I_sat/ （μmol·m⁻²·s⁻¹）	I_sat’/ （μmol·m⁻²·s⁻¹）
420	——	273	575	——	347
435	300	311	600	300	313
445	300	316	620	200	284
450	300	293	630	200	301
465	300	299	650	200	264
475	200	287	660	400	276
500	——	328	675	400	287
520	——	301	690	500	416
535	——	338	700	500	441
550	300	342	730	——	449
565	——	506	750	——	1154

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表 4 马褂木的补偿响应系数、修正系数、补偿比率系数和补偿点光强

Table 4. Compensation response coefficient, correction coefficient, compensation ratio coefficient, and light intensity at compensation point of L. chinense

波长 Wavelength λ/nm	η_λ （10⁻³）	β_λ （10⁻³）	γ_λ （10⁻³）	I_c/ （μmol·m⁻²·s⁻¹）	I_c’/ （μmol·m⁻²·s⁻¹）	R²	波长 Wavelength λ/nm	η_λ （10⁻³）	β_λ （10⁻³）	γ_λ （10⁻³）	I_c/ （μmol·m⁻²·s⁻¹）	I_c’/ （μmol·m⁻²·s⁻¹）	R²
420	37	1.3	1.8	20	21	0.982 7	575	42	0.86	2	10	17	0.991 1
435	44	0.52	3.9	20	20	0.991 6	600	52	0.62	3.3	10	16	0.990 4
445	61	0.48	6.2	10	15	0.992 7	620	57	0.2	6.2	20	18	0.996 2
450	56	0.43	7.5	15	17	0.988	630	66	0.38	5.3	10	16	0.984 5
465	39	1.1	1.1	20	18	0.992 9	650	55	0.61	3.1	15	16	0.994 7
475	62	0.47	5.6	10	18	0.991 6	660	57	0.9	2.6	10	15	0.995 3
500	46	1.8	9.1×10⁻⁸	10	18	0.994 9	675	67	0.31	6.5	10	14	0.996 5
520	36	1.8	8.4×10⁻⁷	20	21	0.988 8	690	36	0.35	2.5	10	11	0.994 4
535	41	2	0.78	15	14	0.995	700	36	0.33	2.9	25	33	0.993
550	34	1.4	0.28	20	19	0.998 3	730	25	0.92	1.7×10⁻⁷	15	25	0.996 8
565	38	2.4	6.3×10⁻⁷	20	16	0.991 8	750	35	1.8	0.99	20	18	0.999 1

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表 5 马褂木饱和点光强的实测值与理论计算值比较（$ {p'_n} = 0 $）

Table 5. Measured and theoretical values of light intensity at saturation point of L. chinense ($ {p'_n} = 0 $)

波长 Wavelength λ/nm	I_sat/ （μmol·m⁻²·s⁻¹）	I_sat’/ （μmol·m⁻²·s⁻¹）	波长 Wavelength λ/nm	I_sat/ （μmol·m⁻²·s⁻¹）	I_sat’/ （μmol·m⁻²·s⁻¹）
420	400	324	575	——	429
435	600	521	600	500	478
445	600	465	620	800	808
450	500	472	630	700	573
465	300	385	650	500	494
475	500	491	660	400	390
500	300	281	675	600	594
520	——	292	690	700	755
535	——	249	700	900	780
550	——	352	730	——	553
565	——	218	750	——	252

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