Simulation of Soil Temperature Field of Potato Ridge Sowing with White Film Mulch and Soil Covering the Seed Band
Simulation of Soil Temperature Field of Potato Ridge Sowing with White Film Mulch and Soil Covering the Seed Band
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白膜覆盖及种带土覆盖马铃薯起垄播种土壤温度场模拟
DOI：
10.1007/s12230-020-09791-3
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发表时间：
2020-07
影响因子：
1.5
通讯作者：
Yongheng Zhang
中科院分区：
文献类型：
--
作者：
Yongmei Wang;Wei Sun;Yongheng Zhang
利用FLUENT软件对定西地区马铃薯白色地膜覆盖播种和种子带覆土的膜土系统进行了温度场的数值模拟。结果表明，随着太阳高度角的增大，山脊地表温度由东向西逐渐升高，热量由地表向土壤深层传递。结果表明，太阳辐射和气温变化对垄面20 cm范围内的土壤温度影响很大。随着深度的增加，温度变化的滞后效应变得更加突出。种带上覆膜的土壤温度低于覆膜不覆土的土壤温度，说明覆膜种带覆土可有效避免高温灼伤芽苗。在16：46 h，东、西种子带地表以下5 cm处的土壤温度分别达到峰值312.09和311.0 K。在19：16 h，种子带5、10、15、20和25 cm处的土壤温度分别为309.28、304.94、298.05、293.64、290.49和308.66、303.42、297.70、292.70、289.67 K。对连续5个晴天的马铃薯垄作种带不同深度的土壤温度进行模拟，并与实测温度进行比较。相对误差小于5.5%，表明该模拟方法是可靠的。本研究对马铃薯覆膜播种促生技术的研究和建立促进马铃薯出苗的膜土系统具有重要意义。
A numerical simulation using FLUENT was used to monitor field temperatures under a film-soil system of potato sowing with white film mulching and soil covering the seed band in the Dingxi district. The results showed that, with an increase in the solar altitude angle, the surface temperatures of the ridge increased gradually from East to West, and the heat transferred from the surface to the deep soil. It was found that soil temperatures within 20 cm of the ridge surface was greatly affected by solar radiation and air temperature changes. With an increase in depth, the lag effect on temperature changes became more prominent. Soil temperatures under mulching film on the seed band were lower than those under mulching film without covering soil, which indicates that covering the seed band with soil in using film mulching can effectively avoid scorching the buds and seedlings due to high temperatures. At 16:46 h, soil temperature at 5 cm below the surface of the East and West seed bands reached their peak temperatures of 312.09 and 311.0 K, respectively. At 19:16 h, soil temperatures at 5, 10, 15, 20 and 25 cm depth in seed bands were 309.28, 304.94, 298.05, 293.64, 290.49 and 308.66, 303.42, 297.70, 292.70, 289.67 K, respectively. Simulated soil temperatures at different depths in seed bands of potato ridge for 5 consecutive sunny days were compared with the measured temperatures. The relative error was less than 5.5%, indicating that the simulation method was reliable. This study is of significance to the growth-promoting techniques of mulched potato sowing, and in constructing a film-soil system which facilitates potato sprouting.
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影响因子：
6.7
作者：
Wang, Yajun;Xie, Zhongkui;Wang, Jinniu
通讯作者：
Wang, Jinniu
垄沟全地膜覆盖提高了半干旱雨养生态系统中马铃薯的水分利用效率和块茎产量
影响因子：
5.8
作者：
ZhaoHong;Wang Run-Yuan;Ma Bao-Luo
通讯作者：
Ma Bao-Luo
影响因子：
2.8
作者：
Das, Smruti;Krishnan, P.;Singh, N. K.
通讯作者：
Singh, N. K.
DOI：
10.1017/9781108592123.014
发表时间：
2019-01
期刊：
Introduction to the Variational Formulation in Mechanics
影响因子：
--
作者：
Prasunjit Sengupta
通讯作者：
Prasunjit Sengupta
DOI：
10.1002/cjg2.1627
发表时间：
2011-07
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Qiang Zhang;Zhaobin Sun;Sheng Wang
通讯作者：
Qiang Zhang;Zhaobin Sun;Sheng Wang