Simulation of water balance and irrigation strategy of typical sand-layered farmland in the Hetao Irrigation District, China

Feng, Zhuangzhuang; Miao, Qingfeng; Shi, Haibin; Feng, Weiying; Li, Xianyue; Yan, Jianwen; Liu, Meihan; Sun, Wei; Dai, Liping; Liu, Jing

doi:10.1016/j.agwat.2023.108236

Cited by 15 publications

(8 citation statements)

References 59 publications

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“…The lack of isotope data with high temporal resolution along the soil-plant-atmosphere axis and the effects of isotope fractionation complicated our analysis of yellow willow water sources. To increase the accuracy of water source identification, future studies should examine the isotope fractionation mechanisms in yellow willow water sources [49], specifically the differences between various plant tissues and soil layers [50][51][52][53], and consider other models and/or data correction factors. To more precisely record short-term changes in the isotopic compositions of soil, plants, and atmospheric water, high-precision isotope analyzers should be employed with a higher sample frequency.…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal Absorption Features of Yellow Willow Water Usage on the Southern Edge of the Semi-Arid Hunshandak Sandland in China

Ji,

Jia,

Miao

et al. 2024

Water

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The improvement of water usage efficiency and productivity, as well as the development of effective water management plans, necessitates a comprehensive understanding of how water utilization patterns in different soil layers within arid and semi-arid climates impact the capacity of plant roots to absorb water. However, there is currently no knowledge regarding the water use strategies employed by artificial yellow willow. So, we conducted a study on the hydrogen and oxygen isotopic composition of rainfall in yellow willow (Salix gordejevii) from the semi-arid region located at the southern edge of the Hunshandak Sandland in China. This study utilized measured data on xylem water, groundwater, soil moisture, and rainfall. By employing a combination of the direct comparison method and the MixSIAR model, we investigated the water uptake strategies employed by yellow willow throughout its growing season. The findings revealed that the mean δ D was highest in precipitation and lowest in groundwater, whereas the mean δ18O was highest in stem water and lowest in groundwater. The δ D and δ18O fluctuated significantly in precipitation but were steady in groundwater. Because precipitation was significantly less than evaporation, the slope and intercept were lower for the local than global atmospheric precipitation line. Water availability steadily declined with increasing depth. Lower δ18O values were caused by precipitation diluting the soil water. The MixSIAR results indicated that the primary source in May, September, and October was utilized at 19%, 18%, and 18%, respectively. In contrast, the utilization rate of each source varied considerably in June, July, and August (the primary source was utilized at 19%, 18%, and 18%, respectively). Comparatively high rates of water absorption and utilization were observed in June (19% of the total water source), July (18%), and August (23%). Therefore, the vertical distribution of the root system and variations in the soil water content regulate water usage for the yellow willow. To prevent excessive water usage and promote ecosystem restoration with artificial yellow willow plantations in water-limited desert settings, policy makers should consider the patterns of plant water use and soil water availability. By selecting drought-adapted plant species and optimizing irrigation management, it is possible to reduce water wastage and ensure that water is used efficiently for revegetation and ecosystem restoration, avoiding overuse of water and maintaining the sustainability of revegetation in water-stressed desert areas.

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Section: Discussionmentioning

confidence: 99%

Spatiotemporal Absorption Features of Yellow Willow Water Usage on the Southern Edge of the Semi-Arid Hunshandak Sandland in China

Ji,

Jia,

Miao

et al. 2024

Water

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“…Compared with that in the other vertical soil layers, RL in the 10-20 cm soil layer had a better correlation with yield and WUE (r = 0.847, p < 0.01); in contrast, RL in the 40-50 cm layer showed little or no correlation with yield and WUE. This may be because capillary water remained in the sand layer when the fine sand layer exceeded 35 cm, thus interrupting the hydraulic connection between the layers above and below the sand layer [62][63][64]. Given that roots cannot effectively absorb soil moisture below the sand layer, the growth of deep roots may not significantly increase maize yield.…”

Section: Discussionmentioning

confidence: 99%

Effect of Water Conservation and Nitrogen Reduction on Root Growth and Yield in Spring Maize in Typical Sand Interlayered Soil

Sun,

Shi,

et al. 2024

Agriculture

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Given the low water and fertiliser use efficiency and the extensive distribution of sand interlayered soil in the Hetao irrigation district (HID), this study aimed to investigate the effects of different irrigation and fertilisation regimes on root parameters and yield in spring maize grown in sand interlayered soil. A two-year field plot experiment was conducted using the spring maize “Ximeng 3358” under three irrigation and nitrogen levels. Root length (RL), surface area (RS), diameter (RD), volume (RV), and length density (RLD), grain yield, and water use efficiency (WUE) were examined. Root growth was inhibited at the sand layer, with approximately 72.46–87.37% of the roots concentrated in the 0–40 cm soil layer. Notably, the proportion of roots in the bottom layer was 24.61–87.37% higher than that in the sub-bottom layer. Moreover, RL, RS, RD, and RV peaked in the medium irrigation and nitrogen fertilisation (I2F2) treatment. Furthermore, correlation analysis showed that the root parameters were significantly positively correlated with yield and WUE, with RS being most correlated to yield and WUE. Roots at a narrow row spacing of 20 cm (NR20) and at a depth of 10–20 cm were strongly correlated with yield and WUE. Conclusively, the I2F2 treatment can be used as the optimal combination of water and nitrogen for sand interlayered soil farmlands.

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“…The treatments included various irrigation schedules, crop planting patterns, etc., to investigate their impact on crop growth and output. The soil in the experimental locations was categorized into two layers: the topsoil layer (0 to 40 cm) was chalky loam with a soil bulk density of 1.43 g/cm 3 , and the subsoil layer (40 to 100 cm) was chalky loam with a soil bulk density of 1.40 g/cm 3 .…”

Section: Experimental Site and Field Trialsmentioning

confidence: 99%

“…Recently, the imbalance between availability and demand for water resources has become noticeable, leading to water shortages. Asynchronous irrigation scheduling and varying water levels in the Yellow River have resulted in inconsistent irrigation dates and volumes, which are not aligned with crop water requirements, exacerbating the issue of water scarcity [1][2][3]. The irrigation schedules are not consistently optimized, resulting in water wastage and worsening the water shortage.…”

Section: Introductionmentioning

confidence: 99%

Irrigation Schedule Optimization for Wheat and Sunflower Intercropping under Water Supply Restrictions in Inner Mongolia, China

Zheng,

Hou,

et al. 2024

Atmosphere

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Precise water management is essential for the efficient development of irrigated agricultural crops in the Hetao Irrigation Area of Inner Mongolia. Given the severe water scarcity in the region and the significant use of intercropping as a cropping method, the development of rational irrigation scheduling is crucial. The objective of this work was to combine the ISAREG model with wheat–sunflower intercropping crops in order to enhance the effectiveness of irrigation scheduling in intercropping systems. This was achieved by changing and verifying crucial parameters for simulating irrigation patterns in intercropping. We conducted an assessment of nine irrigation schedules for a wheat–sunflower intercropping system in order to provide a range of irrigation scenarios that effectively fulfill the water requirements of the system. In light of this, we suggested implementing restrictions on the dates and volumes of irrigation based on the demand for agricultural irrigation. This approach aimed to establish irrigation schedules that are highly efficient and tailored to the specific crops in the area. As a result, we achieved a water use efficiency rate of 100%, saved 28.78% of water resources, optimized crop irrigation schedules, and enhanced crop economics by 6.7%. This study presents a novel and efficient method to optimize agricultural irrigation schedules, boost agricultural water use efficiency, and maximize crop yields in order to promote sustainable agricultural development.

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Simulation of water balance and irrigation strategy of typical sand-layered farmland in the Hetao Irrigation District, China

Cited by 15 publications

References 59 publications

Spatiotemporal Absorption Features of Yellow Willow Water Usage on the Southern Edge of the Semi-Arid Hunshandak Sandland in China

Spatiotemporal Absorption Features of Yellow Willow Water Usage on the Southern Edge of the Semi-Arid Hunshandak Sandland in China

Effect of Water Conservation and Nitrogen Reduction on Root Growth and Yield in Spring Maize in Typical Sand Interlayered Soil

Irrigation Schedule Optimization for Wheat and Sunflower Intercropping under Water Supply Restrictions in Inner Mongolia, China

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