Research on the deposition law of the spray droplet group based on single droplet multiphase flow simulation

In recent years, there has been a frequent occurrence of large-scale pests and diseases, leading to a dramatic increase in the application of pesticides. This practice presents a significant challenge to both the environment and human health. Citrus and apple trees are the most extensively cultivate...

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Vydáno v:Journal of cleaner production Ročník 423; s. 138605
Hlavní autoři: Chen, Chongchong, Li, Shougen, Wu, Xiaoyi, Li, Jiale, Jia, Yalan, Kang, Feng, Wang, Yaxiong
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 15.10.2023
Témata:
Agroforestry plant protection
apples
application volume
China
Citrus
contact angle
Deposition efficiency
Droplet population
droplet size
droplets
fruit trees
fruits
human health
indirect contact
Individual droplet
leaf angle
leaf area
Leaf tilt angle
leaves
liquids
Optimal parameters
pesticide application
pesticides
China
Agroforestry plant protection
Optimal parameters
Deposition efficiency
Droplet population
Leaf tilt angle
Individual droplet
ISSN:0959-6526, 1879-1786
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Shrnutí:In recent years, there has been a frequent occurrence of large-scale pests and diseases, leading to a dramatic increase in the application of pesticides. This practice presents a significant challenge to both the environment and human health. Citrus and apple trees are the most extensively cultivated fruit trees in China, resulting in a significant amount of pesticide usage annually. In an effort to enhance the utilization efficiency of pesticides and decrease the volume of pesticide application, this article employs citrus and apple branches as target subjects to simulate current application parameters. By comparing the deposition quantity of pesticide per unit leaf area under identical application amounts, we summarize the optimal application parameters for these two fruit tree species. Under the optimal application parameters, the application volume of the pesticide solution experienced a reduction of approximately 30% compared to the average application amount. Simultaneously, this article conducted a single droplet impact simulation, and the simulation results were in line with the deposition test principles of droplet groups. The liquid deposition rate is higher when the leaf inclination angle, droplet velocity, droplet size, and the indirect contact angle between the liquid and the leaf are smaller. This study provides guidance on parameter selection for pesticide application in citrus and apple cultivation, while also serving as a methodological reference for research in other areas of atomizer technology. [Display omitted]
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ISSN:0959-6526
1879-1786
DOI:10.1016/j.jclepro.2023.138605