Scale Benefit Analysis of Plant Factory Based on Entropy TOPSIS Model

doi:10.11924/j.issn.1000-6850.casb2022-0531

Abstract

Abstract:

The purpose of this study is to explore what kind of planting scale and investment ratio of plant factory can bring considerable benefits to investors, and provide quantitative reference for the promotion and development of plant factory industry. Based on the analysis of the actual project investment cost, operation and maintenance cost of the established plant factory, five indexes of a system for plant factory construction, including construction cost, operation and maintenance cost, light and energy utilization rate, yield per unit area and internal rate of return, were selected. Relevant construction scales of the plant factory at home and abroad were analyzed. The optimized scheme for plant factory construction of different planting scales was explored, the index expansion method was used to make cost-benefit estimates and corrections for plant factories of different planting scales under ideal conditions, and the entropy-TOPSIS model was adopted to further calculate the results and select the optimal planting scale. According to the normalized closeness calculated by the entropy-TOPSIS model on the estimated data, the planting area of 3000 m² is the closest to the optimal solution. It further shows that the benefits of plant factory are not in accordance with the increase of the planting area, it is mainly related to the fixed asset investment ratio of the actual planting scheme and the operation and construction plan.

Key words: plant factory, scale benefit, entropy weight method, TOPSIS, economic analysis

CHEN Wenting, SUN Bo, LI Chunsheng, PENG Yun, LI Jing, WANG Jing. Scale Benefit Analysis of Plant Factory Based on Entropy TOPSIS Model[J]. Chinese Agricultural Science Bulletin, 2023, 39(17): 140-146.

Figures/Tables 7

References 25

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光照强度/(μmol/m²·s)	耗电量/kw	电能利用率/%	光能利用率/%
300	13.98	0.93	3.75
350	16.32	0.95	3.11
400	18.65	0.65	2.64

光照强度/(μmol/m²·s)	耗电量/kw	电能利用率/%	光能利用率/%
300	13.98	0.93	3.75
350	16.32	0.95	3.11
400	18.65	0.65	2.64

方案	种植面积/m²	占地面积/m²	立体栽培架数量及层数	人工光照强度/[μmol/(m²∙s)]	管理人员数量
1	1000	400	125台4层	300	1
2	1920	750	160台6层	350	2
3	3000	750	250台6层	300	3
4	4000	750	250台8层	350	4
5	4800	750	300台8层	400	4

方案	种植面积/m²	占地面积/m²	立体栽培架数量及层数	人工光照强度/[μmol/(m²∙s)]	管理人员数量
1	1000	400	125台4层	300	1
2	1920	750	160台6层	350	2
3	3000	750	250台6层	300	3
4	4000	750	250台8层	350	4
5	4800	750	300台8层	400	4

方案	种植面积/m²	建设成本/万元	运维成本/万元	光电能利用率/%	单位面积产量/(kg/m²)	内部收益率/%
1	1000	1.95	1.45	2.34	2.38	15
2	1920	3.1	2.64	2.03	2.4	7
3	3000	4.81	4.34	2.34	2.38	16
4	4000	5.59	5.47	2.03	2.4	9
5	4800	6.31	6.49	1.65	2	17