water consumption
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2022 ◽  
Vol 85 ◽  
pp. 102396
Kristin Floress ◽  
Rachael Shwom ◽  
Holly Caggiano ◽  
Jacob Slattery ◽  
Cara Cuite ◽  

2022 ◽  
Vol 315 ◽  
pp. 110804
Makatar Wae-hayee ◽  
Siravit Pakdeechot ◽  
Sherly Hanifarianty ◽  
Wasu Suksuwan

Agronomy ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 213
Guohua Zhang ◽  
Xinhu Li

Shallow groundwater is considered an important water resource to meet crop irrigation demands. However, limited information is available on the application of models to investigate the impact of irrigation schedules on shallow groundwater depth and estimate evaporation while considering the interaction between meteorological factors and the surface soil water content (SWC). Based on the Richards equation, we develop a model to simultaneously estimate crop water consumption of shallow groundwater and determine the optimal irrigation schedule in association with a shallow groundwater depth. A new soil evaporation function was established, and the control factors were calculated by using only the days after sowing. In this study, two irrigation scheduling methods were considered. In Method A, irrigation was managed based on the soil water content; in Method B, irrigation was based on the crop water demand. In comparison with Method B, Method A was more rational because it could use more groundwater, and the ratio of soil evaporation to total evapotranspiration was low. In this model, the interaction between meteorological factors and the SWC was considered to better reflect the real condition; therefore, the model provided a better way to estimate the crop water consumption.

Pezhman Mousavi-Mirkalaei ◽  
Abbas Roozbahani ◽  
Mohammad Ebrahim Banihabib ◽  
Timothy O. Randhir

2022 ◽  
Vol 2022 ◽  
pp. 1-11
Lei Wu ◽  
Zhong Tao ◽  
Zhi-man Zhao ◽  
Wahab Abdul Ghafar ◽  
Yan Tao ◽  

The use of phosphogypsum to prepare phosphorus building gypsum (PBG) is of great value to the resource utilization of phosphogypsum. In this study, PBG was ball-milled to obtain phosphorus building gypsum with good performance, which can meet the requirements of the Chinese standards for first-class building gypsum. Meanwhile, the changes of net slurry physical properties, mechanical properties, and particle size parameters of PBG under different treatment times were analyzed. With the increase of ball milling time, the particle size of PBG decreased rapidly and then stabilized, and the specific surface area gradually increased and then started to rise back. Ball milling can significantly reduce the standard consistency water requirement of phosphogypsum, resulting in a shorter setting time and higher strength of phosphogypsum. In the fixed water consumption test, the effect of ball milling time on the performance of phosphogypsum was small. Compared with sieving, washing, aging, and other means of PBG treatment, ball milling has the advantages of simplicity, environmental protection, and low cost, and it has some practical significance in production.

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