scholarly journals Using Bromide Data Tracer and HYDRUS-1D to Estimate Groundwater Recharge and Evapotranspiration under Film-mulched Drip Irrigation in an Arid Inland Basin, Northwest China

2020 ◽  
Author(s):  
Wenling Chen ◽  
Jianjun Wang ◽  
Yanfen Liu ◽  
Menggui Jin ◽  
Xing Liang ◽  
...  
Keyword(s):  
Groundwater Recharge ◽  
Drip Irrigation ◽  
Tracer Tests ◽  
Northwest China ◽  
Soil Evaporation ◽  
One Dimensional ◽  
Groundwater Evaporation ◽  
Semi Arid ◽  
Hydrus 1D ◽  
Mulched Drip Irrigation

Accurate estimation of groundwater recharge (GR) and evapotranspiration (ET) are essential for sustainable groundwater resources management, especially in water-limited arid and semi-arid regions. In the Manas River Basin (MRB), water shortage is the main factor restricting sustainable development of irrigated agriculture, which relies heavily on groundwater. Film-mulched drip irrigation significantly changes the pattern and dominant processes of water flow in the unsaturated zone, which increases the difficulty of estimating GR and ET. To better estimate GR and ET under film-mulched drip irrigation in the MRB, bromide tracer tests and soil lithologic investigation were conducted at twelve representative sites in the MRB. A one-dimensional variably saturated flow model (HYDRUS-1D) was calibrated at each site using groundwater evaporation data inferred from the bromide tracer tests. The results showed that average annual groundwater evaporation in uncultivated lands calculated from bromide trace tests was 25.55 mm. Good simulation accuracy was achieved between the observed and simulated evaporation. Model calculations showed that the annual GR was within 5.5 to 37.0 mm under film-mulched drip irrigation. The annual ET was within 507.0 to 747.1 mm, with soil evaporation between 35.7 to 117.0 mm and transpiration between 460.9 to 642.3 mm, respectively. The portion of the soil evaporation for the total ET was within 7% to 16% and more than 70% of the precipitation and irrigation water was used by the cotton plants. Spatial variations in soil lithology, water-table depth, and initial soil water content led to the spatial differences of GR and ET in the MRB. Our study indicated that bromide tracer tests may be used to evaluated ET in the arid and semi-arid oases. The combination of bromide tracer tests and one dimensional variably saturated model can enhance reliability for estimation of GR and ET under film-mulched drip irrigation not only in the MRB, Northwest China but also the other similar arid inland basins around the world.

scholarly journals An analysis on the influence of precipitation infiltration on groundwater under different irrigation conditions in the semi-arid area

2021 ◽  
Author(s):  
Long Yan ◽  
Min-jian Chen ◽  
Peng Hu ◽  
Di-li Li ◽  
Yong Wang
Keyword(s):  
Drip Irrigation ◽  
Arid Area ◽  
Rainfall Infiltration ◽  
Groundwater Depth ◽  
In Situ Observation ◽  
Groundwater Extraction ◽  
Flood Irrigation ◽  
The Impact ◽  
Semi Arid ◽  
Mulched Drip Irrigation

Abstract The West Liaohe Plain is a typical semi-arid area, where the process of rainfall infiltration to replenish groundwater is a key link in its vertical hydrological cycle. In this paper, we compare and analyze the impact upon soil moisture movement and water infiltration after the shift of irrigation method from flood irrigation to mulched drip irrigation under mulch through setting up in-field in-situ observation points and carrying out groundwater depth dynamic observation. The results show that compared with mulched drip irrigation under mulch, flood irrigation has a stronger response to rainfall infiltration and a quicker response time in the rise of underground depth. With the decrease of groundwater level, the effect of rainfall infiltration to replenish groundwater is significantly weakened. In the flood irrigation area, the groundwater depth at about 8 m already has no obvious response to a small amount of rainfall. However, the groundwater depth at 6 m in the area of mulched drip irrigation under mulch already has no response to rainfall. Therefore, when groundwater extraction is carried out in irrigation areas, reasonable groundwater extraction levels should be designated in light of different irrigation methods to maintain the sustainable utilization of groundwater.

scholarly journals Integrated Evaluation of the Water Deficit Irrigation Scheme of Indigowoad Root under Mulched Drip Irrigation in Arid Regions of Northwest China Based on the Improved TOPSIS Method

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1532
Author(s):  
Zeyi Wang ◽  
Hengjia Zhang ◽  
Yucai Wang ◽  
Chenli Zhou
Keyword(s):  
Water Deficit ◽  
Drip Irrigation ◽  
Deficit Irrigation ◽  
Comprehensive Evaluation ◽  
Water Productivity ◽  
Northwest China ◽  
High Yield ◽  
Water Control ◽  
Entropy Weight ◽  
Mulched Drip Irrigation

Limited water resources and low water productivity limit the sustainable development of agriculture in northwest China. In this study, drip irrigation under plastic film was used to achieve an optimal water deficit irrigation (WDI) scheme for the cultivation of indigowoad root (Isatis tinctoria L.). Field water control experiments were conducted in 2016 and 2017. Evaluation of WDI schemes was carried out by considering five indices: water consumption, yield, water use efficiency (WUE), indigo, and (R,S)-goitrin. To enhance the reliability of results, the analytic hierarchy process (AHP) and entropy weight method (EWM) were adopted to calculate the combined weight of the evaluation index. Finally, an improved technique for order of preference by similarity to ideal solution (TOPSIS) that integrated AHP–EWM weights was used to construct a unified, comprehensive evaluation model of indigowoad root under mulched drip irrigation that would produce high yield while saving water. The evaluation results indicated that mild WD (specifically, the V1G1 treatment) was continuously exerted during the vegetative and fleshy root growth periods, which enhanced the WUE and improved the quality of indigowoad root to a certain extent without significantly reducing the yield. These results provide a scientific basis for irrigation of indigowoad in northwest China and other areas with a similar environment.

scholarly journals Assessing Growth and Water Productivity for Drip-Irrigated Maize under High Plant Density in Arid to Semi-Humid Climates

Agriculture ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 97
Author(s):  
Feng Wang ◽  
Jun Xue ◽  
Ruizhi Xie ◽  
Bo Ming ◽  
Keru Wang ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Plant Density ◽  
Water Productivity ◽  
Growth And Yield ◽  
Planting Density ◽  
Arid Areas ◽  
High Plant Density ◽  
Aquacrop Model ◽  
Semi Arid ◽  
Mulched Drip Irrigation

Determining the water productivity of maize is of great significance for ensuring food security and coping with climate change. In 2018 and 2019, we conducted field trials in arid areas (Changji), semi-arid areas (Qitai) and semi-humid areas (Xinyuan). The hybrid XY335 was selected for the experiment, the planting density was 12.0 × 104 plants ha−1, and five irrigation amounts were set. The results showed that yield, biomass, and transpiration varied substantially and significantly between experimental sites, irrigation and years. Likewise, water use efficiency (WUE) for both biomass (WUEB) and yield (WUEY) were affected by these factors, including a significant interaction. Normalized water productivity (WP*) of maize increased significantly with an increase in irrigation. The WP* for film mulched drip irrigation maize was 37.81 g m−2 d−1; it was varied significantly between sites and irrigation or their interaction. We conclude that WP* differs from the conventional parameter for water productivity but is a useful parameter for assessing the attainable rate of film-mulched drip irrigation maize growth and yield in arid areas, semi-arid areas and semi-humid areas. The parametric AquaCrop model was not accurate in simulating soil water under film mulching. However, it was suitable for the prediction of canopy coverage (CC) for most irrigation treatments.

scholarly journals Evaluation of mulched drip irrigation for cotton in arid Northwest China

2013 ◽  
Vol 32 (1) ◽  
pp. 15-27 ◽  
Author(s):  
Zaimin Wang ◽  
Menggui Jin ◽  
Jirka Šimůnek ◽  
Martinus Th. van Genuchten
Keyword(s):  
Drip Irrigation ◽  
Northwest China ◽  
Arid Northwest China ◽  
Mulched Drip Irrigation

Effect of drip irrigation on wheat evapotranspiration, soil evaporation and transpiration in Northwest China

2020 ◽  
Vol 232 ◽  
pp. 106001 ◽  
Author(s):  
Danni Yang ◽  
Sien Li ◽  
Shaozhong Kang ◽  
Taisheng Du ◽  
Ping Guo ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Northwest China ◽  
Soil Evaporation

scholarly journals Effects of Mulched Drip Irrigation on Soil Moisture and Groundwater Recharge in the Xiliao River Plain, China

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1755 ◽  
Author(s):  
Xiaohui Jin ◽  
Minjian Chen ◽  
Yumiao Fan ◽  
Long Yan ◽  
Fang Wang
Keyword(s):  
Water Content ◽  
Groundwater Recharge ◽  
Soil Water ◽  
Soil Water Content ◽  
Drip Irrigation ◽  
Growth Stage ◽  
Infiltration Depth ◽  
Flood Irrigation ◽  
River Plain ◽  
Mulched Drip Irrigation

Mulched drip irrigation for maize cultivation has been widely implemented in the Xiliao River Plain in Northeast China in recent years. However, the effects of the change in irrigation method on soil water content and groundwater recharge in this area still remains uncertain. In this study, soil water content under mulched drip irrigation and flood irrigation was measured through field experiments. Soil water movement in the entire growing season under the two irrigation methods was simulated for the quantitative analysis of groundwater recharge by the Hydrus-2D model. Results showed that soil water content under mulched drip irrigation was generally larger than that of flood irrigation in the initial growth stage. However, an opposite trend was observed in the main growth stage. The simulated results indicated that the cumulative water fluxes of flood irrigation were greater than the values of mulched drip irrigation. Moreover, while infiltration depth under flood irrigation reached the maximum simulated depth (400 cm), infiltration depth under mulched drip irrigation was only 325 cm. The results of this study showed that mulched drip irrigation reduced the infiltration depth and groundwater recharge to some extent in the Xiliao River Plain. Such results are helpful in determining the influence of mulched drip irrigation on groundwater and can be a reference for the maintenance of the sustainability of regional groundwater in the large-scale promotion of mulched drip irrigation.

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