文献类型： 外文期刊

作者： Guo, Shenbo ¹ ; Wu, Letian ¹ ; Cao, Xinwei ¹ ; Sun, Xiaoli ¹ ; Cao, Yanfei ² ; Li, Yuhan ² ; Shi, Huifeng ¹ ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Agr Machinery, Urumqi 830091, Peoples R China

2.Northwest A&F Univ, Coll Hort, Xianyang 712100, Peoples R China

3.Res Ctr Agr Engn Facil & Equipment Engn Technol, Urumqi 830091, Peoples R China

4.Xinjiang Acad Agr Sci, Agr Engn Co, Urumqi 830091, Peoples R China

关键词： greenhouse; weighing device; tomato simulation model; multiple linear regression

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2024 年 10 卷 3 期

页码：

收录情况： SCI

摘要： Plant height and leaf area index (LAI) are crucial growth indicators that reflect the growth status of tomatoes in greenhouses, enabling accurate determinations to effectively estimate crop transpiration and formulate irrigation strategies for reducing agricultural water waste. There is a need for the increased application of related models to simulate tomato growth indices in the traditional greenhouse production in China. This study proposes a nondestructive, real-time monitoring and simulation device for measuring tomato plant height and leaf area index. The weight of aboveground tomatoes was obtained by suspending tomato plants on dynamometers, while the total weight of stem and leaf organs was determined using a distribution coefficient simulation model. The R2 value between the measurements from the electronic scale and those from the aboveground fresh weight device for tomatoes was 0.937, with an RMSE value of 0.05 kg. The monitoring device did not affect the average tomato growth during operation. The device will not affect the growth of tomatoes during monitoring. A multiple linear regression was used to compare the measured and simulated values of the plant height and leaf area index of various types of greenhouse tomatoes cultivated in different greenhouse types. The average R2 value for simulating plant height was 0.817 with an RMSE of 10.81 cm. The average R2 value for the leaf area index was 0.854, with an RMSE of 0.55 m2 center dot m-2. The simulated values for plant height and leaf area index closely matched the measured values, indicating that the model has high accuracy and applicability in traditional Chinese greenhouses (solar greenhouses and insulated plastic greenhouses). However, further optimization is required for commercially produced, continuous plastic greenhouses equipped with greenhouse environmental control equipment.