人工智能辅助种植策略对温室草莓生产调控效果对比研究

doi:10.12133/j.smartag.SA202203006

Smart Agriculture ›› 2022, Vol. 4 ›› Issue (2): 183-193.doi: 10.12133/j.smartag.SA202203006

• 智能管理与控制 • 上一篇

人工智能辅助种植策略对温室草莓生产调控效果对比研究

耿闻轩¹(), 赵俊晔¹(), 阮继伟²(), 侯跃辉³

^1.中国农业科学院农业信息研究所/农业部农业信息技术重点实验室，北京 100081
^2.云南省农业科学院花卉研究所，云南昆明 650205
^3.云南省元江县农业技术推广服务中心，云南元江 653300

收稿日期:2022-03-08 出版日期:2022-06-30
基金项目:
中国农业科学院农业信息研究所公益性科研院所基本科研业务费专项资金(JBYW-AII-2021-15);国家自然科学基金(31601243);云南省技术创新人才培养对象(2018HB116)
作者简介:耿闻轩（1996-），女，博士研究生，研究方向为农业数字化。E-mail： wenxuangeng@163.com
通信作者: 1. 赵俊晔（1978-），女，博士，研究员，研究方向为农业数字化转型、作物栽培生理。E-mail：zhaojunye@caas.cn
2. 阮继伟（1978-），男，博士，研究员，研究方向为园艺作物遗传育种与栽培技术。E-mail：rjw@yaas.org.cn

Comparative Study of the Regulation Effects of Artificial Intelligence-Assisted Planting Strategies on Strawberry Production in Greenhouse

GENG Wenxuan¹(), ZHAO Junye¹(), RUAN Jiwei²(), HOU Yuehui³

^1.Ministry of Agriculture Key Laboratory of Agri-information Service Technology/ Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
^2.Flower Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
^3.Agro-Tech Extension and Service Center of Yunnan Yuanjiang, Yuanjiang 653300, China

Received:2022-03-08 Online:2022-06-30
Foundation items:Basic Research Fund of Chinese Academy of Agricultural Sciences(JBYW-AII-2021-15);National Natural Science Foundation of China(31601243);Technical Innovation Talent Training Object of Yunnan Province (2018HB116)
About author:GENG Wenxuan, E-mail：wenxuangeng@163.com
Corresponding author:1. ZHAO Junye, E-mail：zhaojunye@caas.cn;

2. RUAN Jiwei, E-mail：rjw@yaas.org.cn

摘要/Abstract

摘要：

人工智能（Artificial Intelligence，AI）辅助种植有助于提高设施园艺作物精准化管理水平、缓解日益凸显的劳动力紧缺问题。草莓是典型的劳动密集型园艺作物，研究对比采用不同AI种植策略和关键技术对草莓温室生产的调控效果，可对园艺作物种植的AI技术改进和产业化应用提供参考。本研究对比分析了4个不同AI种植策略对草莓生长发育和产量及品质的调控效果，并以人工种植管理为参照，对AI种植的技术特点和存在问题进行了分析。结果表明，知识图谱、深度学习、视觉识别、作物模型和作物生长仿真器等技术在草莓AI种植中各有优势。其中，AI-1组采用知识图谱技术将专家经验、作物数据和环境数据进行融合，建立了标准化草莓种植知识结构和智慧种植决策方法，对作物生产发育的调控较为稳健，以较低的投入获得了最高产值。与人工种植管理相比，AI种植策略组的平均产量提高了1.66倍，平均产值提高了1.82倍，最高投入产投比提高了1.27倍。针对高产优质的目标，在配备较完善的智能化设备和控制组件的温室生产条件下，AI辅助种植能有效提高草莓种植管控的精准度，减少水肥和劳动力的投入，获得较高的收益，但也存在对人工管理扰动的模拟难、作物本体信息采集难等问题。

关键词: 人工智能, 草莓, 种植策略, 调控效果, 自动化温室, 知识图谱

Abstract:

Artificial intelligence (AI) assisted planting can improve in the precise management of protected horticultural crops while also alleviating the increasingly prevalent problem of labor shortage. As a typical representative of labor-intensive industries, the strawberry industry has a growing need for intelligent technology. To assess the regulatory effects of various AI strategies and key technologies on strawberry production in greenhouse, as well as provide valuable references for the innovation and industrial application of AI in horticultural crops, four AI planting strategies were evaluated. Four 96 m²modern greenhouses were used for planting strawberry plants. Each greenhouse was equipped with standard sensors and actuators, and growers used artificial intelligence algorithms to remotely control the greenhouse climate and crop growth. The regulatory effects of four different AI planting strategies on strawberry growth, fruit yield and qualitywere compared and analyzed. And human-operated cultivation was taken as a reference to analyze the characteristics, existing problems and shortages. Each AI planting strategy simulated and forecast the greenhouse environment and crop growth by constructing models. AI-1 implemented greenhouse management decisions primarily through the knowledge graph method, whereas AI-2 transferred the intelligent planting model of Dutch greenhouse tomato planting to strawberry planting. AI-3 and AI-4 created growth and development models for strawberries based on World Food Studies (WOFOST) and Product of Thermal Effectiveness and Photosynthesis Active Radiation (TEP), respectively. The results showed that all AI supported strategy outperformed a human-operated greenhouse that served as reference. In comparison to the human-operated cultivation group, the average yield and output value of the AI planting strategy group increased 1.66 and 1.82 times, respectively, while the highest Return on Investment increased 1.27 times. AI can effectively improve the accuracy of strawberry planting management and regulation, reduce water, fertilizer, labor input, and obtain higher returns under greenhouse production conditions equipped with relatively complete intelligent equipment and control components, all with the goal of high yield and quality. Key technologies such as knowledge graphs, deep learning, visual recognition, crop models, and crop growth simulators all played a unique role in strawberry AI planting. The average yield and Return on Investment (ROI) of the AI groups were greater than those of the human-operated cultivation group. More specifically, the regulation of AI-1 on crop development and production was relatively stable, integrating expert experience, crop data, and environmental data with knowledge graphs to create a standardized strawberry planting knowledge structure as well as intelligent planting decision-making approach. In this study, AI-1 achieved the highest yield, the heaviest average fruit weight, and the highest ROI. This group's AI-assisted strategy optimized the regulatory effect of growth, development, and yield formation of strawberry crops in consideration of high yield and quality. However, there are still issues to be resolved, such as the difficulty of simulating the disturbance caused by manual management and collecting crop ontology data.

Key words: artificial intelligence, strawberry, planting strategies, regulation effects, automated greenhouse, knowledge graphs

中图分类号:

S625.5+1

耿闻轩, 赵俊晔, 阮继伟, 侯跃辉. 人工智能辅助种植策略对温室草莓生产调控效果对比研究[J]. 智慧农业(中英文), 2022, 4(2): 183-193.

GENG Wenxuan, ZHAO Junye, RUAN Jiwei, HOU Yuehui. Comparative Study of the Regulation Effects of Artificial Intelligence-Assisted Planting Strategies on Strawberry Production in Greenhouse[J]. Smart Agriculture, 2022, 4(2): 183-193.

图/表 8

表1

草莓AI种植策略和技术方案

处理	主要特点	技术策略和实施过程
AI-1	知识图谱+视觉识别+作物模型	结合草莓生长模型和视觉识别，通过知识推理^［14］的方法实现温室管理决策以达到产量最优的目标。首先将所调研的10位专家种植经验和环境及作物传感器数据翻译成计算机语言，构建基于Neo4j的草莓种植管理知识图谱^［15］。然后利用作物水肥模型和温室气候模型分析草莓植株的营养生长和生殖生长过程，由路径排序算法^［16］根据知识图谱模拟专家进行决策。其中机器视觉识别主要针对作物来源数据，采用YOLOv4神经网络多特征融合法^［17］实现草莓生育期、吐水情况、花序和果实的识别，通过与潜在作物长势对比的生长偏差为知识图谱决策提供依据
AI-2	温室番茄种植模式迁移+双层算法	将荷兰温室番茄的智能种植模式^{［11, 18］}迁移到草莓种植，通过改良后的机器学习和条件控制算法制定智能种植管理策略，并引入深度学习处理作物图像信息数据，预测和判断作物生长发育情况^{［12, 19］}。采用双层算法，第一层算法是条件决策，主要是根据专家经验设定阈值，防止极端决策越过不合理界限；第二层是融合产量预测决策和设定值优化决策的混合决策。其中产量预测是基于大数据通过机器学习制定的决策，设定值优化决策是基于传统植物生理模型和专家经验的决策
AI-3	视觉识别+作物模型+专家系统	将作物生长仿真器SUCROS87^［20］应用于草莓潜在产量预测，计算得出在本试验条件下，每株草莓在盛果期每天最多可形成1.6 g干物质，通过与实际干物质量对比，为管理调控提供参考。基于比叶面积（Specific Leaf Area，SLA）构建了WOFOST （World Food Studies）^［21］作物生长模型，预测草莓产量，结合视觉识别对比潜在长势和实际长势，由专家系统提供种植策略。其中利用CNN构建了图像识别系统，通过加入残差模块减少复杂农业背景的干扰，实现自动单叶分割、叶面积测算的目的
AI-4	作物生长模型+发育模型	基于作物干物质生产分配规律和辐热积（Product of Thermal Effectiveness and Photosynthesis Active Radiation，TEP）构建草莓生长发育模型^{［22, 23］}，对作物生长和产量形成进行预测和干预。草莓干物质生产模型主要包括叶面积指数模型、光能截获模型和干物质分配指数模型，用于既定水肥条件下的产量预测。辐热积参数的计算依据主要是基于三基点温度的相对热效应和光合有效辐射。通过作物生长模型和发育模型，自动控制相应发育期的水分和肥料，并根据作物实际长势调节辐热积参数推迟或者加快生育进程

表1

图1

图2

图3

表2

表3

表4

表5

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定植后天数/d	第一花序				第二花序				第三花序
定植后天数/d	AI-1	AI-2	AI-3	AI-4	AI-1	AI-2	AI-3	AI-4	AI-1	AI-2	AI-3	AI-4
12~26	1.25	13.92	5.00	20.83	——	——	——	——	——	——	——	——
27~43	97.50	86.08	91.25	52.78	5.00	6.41	3.90	3.90	——	——	——	——
44~58	1.250	——	1.25	23.61	5.00	——	1.30	11.69	——	——	——	——
59~73	——	——	——	2.78	3.75	1.28	——	50.65	——	——	——	6.49
74~88	——	——	2.50	——	51.25	29.40	28.57	22.08	2.50	1.27	——	——
89~104	——	——	——	——	32.50	57.69	63.64	6.49	5.00	5.06	2.56	3.90
105~119	——	——	——	——	2.50	5.13	2.60	5.19	20.00	21.52	21.79	59.74
120~134	——	——	——	——	——	——	——	——	50.00	18.99	73.08	24.68

处理	定植后天数/d	产量/个	平均单果质量/g
AI-1	63~73	177	13.3
	74~104	15	13.3
	105~134	363	16.2
AI-2	63~73	274	12.0
	74~104	4	11.7
	105~134	155	14.3
AI-3	63~73	309	12.5
	74~104	5	11.5
	105~134	259	14.1
AI-4	63~73	78	12.8
	74~104	97	14.5
	105~134	265	13.1

处理	分级产量/g				总产量/g	可溶性固形物/%
处理	A级	B级	C级	D级	总产量/g	可溶性固形物/%
CK	96.40	449.80	436.40	1598.60	2581.20	10.21
AI-1	295.80	1535.20	225.30	4372.10	8456.10	9.80
AI-2	0.00	249.20	881.60	4406.30	5537.10	9.73
AI-3	0.00	529.00	1461.00	5583.20	7573.20	9.23
AI-4	30.60	481.00	1040.60	4325.20	5877.40	9.59

处理	投入结构/元					总成本/元	产值/元	投入产出比
处理	设施	管理	农药	肥料	水电费	总成本/元	产值/元	投入产出比
CK	64.00	240.00	14.80	29.20	15.80	375.60	181.30	0.48
AI-1	267.00	171.20	9.80	36.90	105.60	590.40	642.10	1.09
AI-2	264.00	160.00	10.20	129.40	129.40	692.90	422.20	0.61
AI-3	256.80	173.10	13.40	6.80	130.40	580.40	568.80	0.98
AI-4	256.80	160.00	15.90	31.70	162.70	627.00	413.00	0.66

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