基于熵权-TOPSIS模型的植物工厂规模效益分析

Scale Benefit Analysis of Plant Factory Based on Entropy TOPSIS Model

旨在探讨植物工厂在何种种植规模及投资比例下能给投资者带来可观效益,为植物工厂产业推广与发展提供技术经济的量化分析参考。基于已建植物工厂实际工程投资造价及运维成本分析,选取建设成本、运维成本、光电能利用率、单位面积产量以及内部收益率5个植物工厂建设指标体系,结合国内外植物工厂相关建设规模分析不同种植规模植物工厂建设优化方案,在理想状态下采用指标扩大法对不同种植规模方案的植物工厂进行成本效益概算及修正,通过熵权-TOPSIS模型进一步测算并选取种植规模与经济效益最优方案,经TOPSIS模型对推算数据测算结果所得,标准化贴近度中种植面积为3000 m2的植物工厂与最优解距离最近,因此可得结论为植物工厂的收益情况并非是种植面积越大越优,主要与实际种植方案的固定资产投资比例以及运营建设方案相关。

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.