Simulation of soil water flow and heat transport in drip irrigated potato field with raised beds and full plastic-film mulch in a semiarid area

Zhang, Youliang; Feng, Shuyi; Wang, Fengxin; Binley, Andrew

doi:10.1016/j.agwat.2018.07.021

Cited by 33 publications

(16 citation statements)

References 54 publications

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“…This might be related to larger hydraulic conductivity and lower saturated water content in deeper soil than in upper soil. Zhang et al (2018) obtained similar findings by simulating soil water distribution after irrigation in a semiarid area. Similarly, Cable and Huxman (2004) found that, in water-limited eco-systems, the effects of small rainfall events on soil water might persist for just a few hours.…”

Section: Discussionsupporting

confidence: 63%

Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China

Zhou¹,

Guan²,

Wu³

et al. 2019

Soil & Water Res.

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Soil water dynamic is considered an important process for water resource and plantation management in Horqin Sand Land, northern China. In this study, soil water content simulated by the SWMS-2D model was used to systematically analyse soil water dynamics and explore the relationship between soil water and rainfall among micro-landforms (i.e., top, upslope, midslope, toeslope, and bottomland) and 0–200 cm soil depths during the growing season of 2013 and 2015. The results showed that soil water dynamics in 0–20 cm depths were closely linked to rainfall patterns, whereas soil water content in 20–80 cm depths illustrated a slight decline in addition to fluctuations caused by rainfall. At the top position, the soil water content in different ranges of depths (20–40 and 80–200 cm) was near the wilting point, and hence some branches, and even entire plants exhibited diebacks. At the upslope or midslope positions, the soil water content in 20–80 or 80–200 cm depths was higher than at the top position. Soil water content was higher at the toeslope and bottomland positions than at other micro-landforms, and deep caliche layers had a positive feedback effect on shrub establishment. Soil water recharge by rainfall was closely related to rainfall intensity and micro-landforms. Only rainfalls > 20 mm significantly increased water content in > 40 cm soil depths, but deeper water recharge occurred at the toeslope position. A linear equation was fitted to the relationship between soil water and antecedent rainfall, and the slopes and R<sup>2</sup> of the equations were different among micro-landforms and soil depths. The linear equations generally fitted well in 0–20 and 20–40 cm depths at the top, upslope, midslope, and toeslope positions (R<sup>2</sup> value of about 0.60), with soil water in 0–20 cm depths showing greater responses to rainfall (average slope of 0.189). In 20–40 cm depths, the response was larger at the toeslope position, with a slope of 0.137. In 40–80 cm depths, a good linear fit with a slope of 0.041 was only recorded at the toeslope position. This study provides a soil water basis for ecological restoration in similar regions.

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Section: Discussionsupporting

confidence: 63%

Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China

Zhou¹,

Guan²,

Wu³

et al. 2019

Soil & Water Res.

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“…The study area was located at the Shiyanghe Experimental Station (N 37 • 52 , E 102 • 50 , altitude 1581 m), China Agricultural University, Wuwei, Gansu Province, on the border of the Tenger Desert with a typical continental temperate climate. The area has sufficient heat resources and limited water resources with mean annual temperature 8 • C, annual accumulated temperature (>0 • C) 3550 • C, annual sunshine duration 3000 h, annual precipitation 164 mm, pan evaporation 2000 mm, and groundwater table 5-30 m below ground surface [38]. The soil texture is sandy loam with mean soil bulk density 1.53 g/cm 3 at 0-1.0 m depth [11].…”

Section: Study Area and Experimental Designmentioning

confidence: 99%

Modeling the Interaction of Plastic Film Mulch and Potato Canopy Growth with Soil Heat Transport in a Semiarid Area

et al. 2020

Self Cite

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Plastic film mulch is an important agricultural technology to reduce water evaporation and modify the soil thermal conditions for crop production. The optical properties of plastic film mulch and the crop canopy growth are both key factors impacting soil heat transport in the soil-film-canopy-atmosphere ecosystem. In this study, a process-oriented model was developed to better understand the interaction among the plastic film mulch, potato (Solanum tuberosum L.) canopy growth, and soil thermal conditions. Canopy growth, photosynthetically active radiation transmittance, net radiation, soil heat flux, and temperature were monitored in a two-year plastic mulch field experiment in Wuwei (Gansu Province, China). Results showed that the simulation of daily soil surface temperature had a good performance with 2.8 and 1.5 °C of root mean square error (RMSE) for the transparent film mulch (TM) and black film mulch (BM), respectively. Moreover, the simulation of the daily net radiation and soil heat flux model indicated reasonable fluctuations with potato phenological development with the daily R2 ranging from 0.89 to 0.98 in 2014 and 2015 for the TM and BM treatments. It was shown that the canopy temperature under BM was greater than that in TM treatment, and the maximum value difference could be up to 7 °C during the early potato growing period, which implied that the BM may perform better in modifying the canopy thermal condition. The model could provide heat distribution information for plastic film choosing in potato field to avoid heat stress.

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“…Among the available models (including SVAT, SHAW and HYDRUS) that can simulate the transport of water, heat and solute in variable-saturated porous media, we use the HYDRUS model in this work [27]. The geometric dimensions of ridges and furrows can be considered explicitly in HYDRUS-2D, whose effectiveness and accuracy for two-dimensional soil water and heat transport simulation have been verified by many scholars [28][29][30][31]. Most previous studies considered a no-flux boundary under film mulched areas [30,31], but the variable-flux boundary has been confirmed to be more practical [32] and was therefore adopted in this paper.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Soil Water and Heat Flow under Plastic Mulching and Different Ridge Patterns

Sun

et al. 2021

Agriculture

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The ridge–furrow mulching system with plastic film (RFMS) has been widely used in semi-arid areas in order to improve soil water and heat conditions, crop yields and water use efficiency. It is of practical significance to study the effect of mulching and ridge types on soil water and heat in order to optimize mulching measures and improve the effectiveness of the ridge and furrow system. To clarify the combined effect of soil water and heat beneath the system and the influence of ridge morphology on it, field experiments were conducted with three treatments, including conventional planting in bare land (CK), a ridge–furrow (wide ridge with 70 cm width and 10 cm height, narrow ridge with 40 cm width and 15 cm height) mulching system with complete plastic film (RFWN) and a ridge–furrow (equal ridge with 55 cm width and 15 cm height) mulching system with complete plastic film (RFE). An insufficient irrigation system was adopted and the two-dimensional numerical software HYDRUS-2D was used to simulate the soil water and heat flow under the experimental conditions. The model was calibrated and verified according to test data for the period of 2018 to 2019, which showed good agreement between the simulated and measured values. The simulation results revealed that the ground temperatures of RFWN and RFE were much higher than that of CK, and the average value of 0–25 cm during the growth period could increase by 2.29–4.61%. Compared with CK, RFWN and RFE reduced soil evaporation (84.71–93.73%) and field evapotranspiration (12.02–21.75%), while they increased root water uptake (25.87–40.98%) and T/ET (48.85–80.15%). Plastic film mulching and ridge morphologies affected the infiltration range and the direction of soil water movement, increased soil moisture when there was no rainfall or irrigation and reduced soil water and heat fluctuations, which was more conducive to crop growth, especially under the RFWN system. The simulation method proposed in this paper is an effective technique for calculating the soil water and heat dynamics under different ridge and furrow sections under the condition of film mulching, and it can be used for the optimal management of soil water and heat in this area.

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Simulation of soil water flow and heat transport in drip irrigated potato field with raised beds and full plastic-film mulch in a semiarid area

Cited by 33 publications

References 54 publications

Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China

Soil water response to rainfall in a dune-interdune landscape in Horqin Sand Land, northern China

Modeling the Interaction of Plastic Film Mulch and Potato Canopy Growth with Soil Heat Transport in a Semiarid Area

Simulation of Soil Water and Heat Flow under Plastic Mulching and Different Ridge Patterns

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