数字农科院2.0

Improving Air Distribution Within Lettuce Plant Canopy by Employing Double-Channel Ventilation Cultivation System: Simulation and Experiment Study

文献类型： 外文期刊

作者： Zhang, Yihan;Chen, Can;Fang, Hui;Tong, Yuxin

作者机构：

关键词： computational fluid dynamic;airflow;uniformity;plant cultivation area;ventilation rate

期刊名称： AGRONOMY-BASEL

ISSN：

年卷期： 2025 年 15 卷 10 期

页码：

收录情况： SCIE（2025版）

摘要： In greenhouse and plant factory production, improper design of the ventilation system and increasing scales will lead to a stagnant airflow zone, which could inhibit plant growth and induce physiological disease, such as tipburn. To increase the airflow within the plant canopy, simplify the equipment complexity, and improve operation convenience, a cultivation system was designed to provide a constant airflow within the plant canopy by integrating ventilation ducts with cultivation tanks. A three-dimensional computational fluid dynamics (ANSYS Fluent 2021R2) model was developed and validated through simulating the airflow distribution within the plant canopy under different intake air velocities. According to the simulated results, an intake air velocity of 10 m s-1 showed better airflow uniformity, and the proportion of the suitable zone reached the highest value of 83% at an intake air velocity of 20 m s-1. To validate the practical effectiveness of cultivation, a cultivation experiment was conducted. Five different canopy air velocities were set at 0 (CK), 0.35 (T1), 0.5 (T2), 0.65 (T3), and 0.8 (T4) m s-1, respectively. The results showed that the photosynthetic and transpiration rate, as well as the fresh and dry weights of lettuce plants (Lactuca sativa cv. 'Tiberius'), increased by 17.8%, 21.7%, 29.6%, and 29.9%, respectively, under treatment T4 compared to those under the control, while the canopy air temperature and relative humidity decreased by 1.3 degrees C and 3.2%, respectively. The above results indicate that the newly designed cultivation system can be considered an effective system for improving lettuce plant growth and its canopy environment.

分类号：

  • 相关文献

[1]AMMONIA AND GREENHOUSE GAS EMISSIONS FROM CO-COMPOSTING OF DEAD HENS WITH MANURE AS AFFECTED BY FORCED AERATION RATE. Zhu, Z.,Dong, H.,Xi, J.,Xin, H..

[2] Improving Air Distribution Within Lettuce Plant Canopy by Employing Double-Channel Ventilation Cultivation System: Simulation and Experiment Study. Yihan Zhang, Can Chen, Hui Fang and Yuxin Tong. 2025

[3]Determining air permeability in reclaimed coastal land based on tidal fluctuations. Li, Jian,Huang, Guanhua,Li, Jian,Huang, Guanhua,Li, Jian,Zhan, Hongbin,You, Kehua. 2012

[4]Analytical Solution to Subsurface Air Pressure in a Three-Layer Unsaturated Zone with Atmospheric Pressure Changes. Zhan, Hongbin,Zhan, Hongbin,Li, Jian,Huang, Guanhua,Li, Jian,You, Kehua,Zhan, Hongbin,Huang, Guanhua. 2012

[5]A Cfd Analysis On Improving Lettuce Canopy Airflow Distribution In A Plant Factory Considering The Crop Resistance And Leds Heat Dissipation. Fang, H, Li, K, Wu, G, Cheng, RF, Zhang, Y, Yang, QC. 2020

[6]A novel method to improve heating uniformity in mid-high moisture potato starch with radio frequency assisted treatment. Zhu, Hankun,Li, Dong,Li, Shujun,Li, Shujun,Wang, Shaojin,Wang, Shaojin.

[7]Analysis on energy consumption of drying process for dried Chinese noodles. Wang, Zhenhua,Zhang, Yingquan,Zhang, Bo,Yang, Fuguang,Yu, Xiaolei,Zhao, Bo,Wei, Yimin.

[8]Spatial and temporal distributions of nitrogen and crop yield as affected by nonuniformity of sprinkler fertigation. Li, JS,Li, B,Rao, MJ. 2005

[9]Characterizing center pivot irrigation with fixed spray plate sprinklers. Yan HaiJun,Jin HongZhi,Qian YiChao. 2010

[10]Field evaluation of crop yield as affected by nonuniformity of sprinkler-applied water and fertilizers. Li, JS,Rao, MJ. 2003

[11]Analysis of the decrease of center pivot sprinkling system uniformity and its impact on maize yield. Li Lianhao,Li Lianhao,Zhang Xinyue,Qiao Xiaodong,Liu Guiming. 2016

[12]Modeling crop yield as affected by uniformity of sprinkler irrigation system. Li, JS. 1998

作者其他论文 更多>>