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Simulation of temperature distribution in double-row potato ridges mulched with plastic film covered with soil

International Journal of Agricultural and Biological Engineering 2024年第4期17卷 185-197页

作者： Quandong Liu Wei Sun Yongmei Wang Juanling Wang Xinglong Che Mechanical and Electrical Engineering College Gansu Agricultural UniversityLanzhou 730070China Agricultural Machinery Branch of Longxi County Vocational and Technical School Dingxi 748100China Institute of Dryland Agriculture Shanxi Agricultural UniversityTaiyuan 030031China

In Northwest China,potatoes are cultivated on double-rows of each ridge which is mulched with plastic film,and the film is covered with some of *** effective in retaining soil moisture,this technique can render the potato seedlings prone to be burned if they are not released from the plastic film in *** this study,the model of convective heat transfer of potato ridge under solar radiation and atmospheric radiation is established by the Fluent *** processes of the heat transfer of potato ridge was simulated for a certain day,and the temperature distribution in the potato ridge was monitored over *** temperature distribution of soil in the growth layer of potato plants was analyzed under different thickness and widths of the covering soil on the *** results showed that with the increase of covering soil thickness and width,the time for soil at different depth to reach the peak-temperature was delayed,and the daily temperature change of soil where the different depths layer of potato plants growth was *** that time,a binary regression equation of offset temperature was constructed by using the Response Surface *** best parameter combination for covering soil on the plastic film is a thickness of 50 mm and a width of 280 mm in the cold and arid areas of Northwest ***,the offset temperature(PT)first decreased and then almost remained unchanged with the increase of covering soil *** the operational efficiency and power consumption of soil covering devices in the field,the unchanged width of the covering soil is 200 *** field experiments have shown that a 50 mm thick of soil covering is beneficial for the growth of potato plants and a 200 mm width of soil covering is beneficial for the growth of potato *** height of potato plants was 21 cm,and the natural emergence rate of potatoes was 95.8%on June 9,*** environment of soil covered could provide theoretical support for the mechanized pla

关键词： potato growth plastic mulching soil covered with film temperature distribution natural emergence rate

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