Effects of straw interlayer on soil water and salt movement and sunflower photosynthetic characteristics in saline-alkali soils

2013 ◽  
Vol 33 (17) ◽  
pp. 5153-5161 ◽  
Author(s):  
赵永敢 ZHAO Yonggan ◽  
逄焕成 PANG Huancheng ◽  
李玉义 LI Yuyi ◽  
胡小龙 HU Xiaolong ◽  
王婧 WANG Jing ◽  
...  
Keyword(s):  
Soil Water ◽  
Photosynthetic Characteristics ◽  
Alkali Soils ◽  
Water And Salt Movement ◽  
Soil Water And Salt

Application of salt-isolation materials to a coastal region: effects on soil water and salt movement and photosynthetic characteristics ofRobinia pseudoacacia

2015 ◽  
Vol 35 (5) ◽  
Author(s):  
王琳琳 WANG Linlin ◽  
李素艳 LI Suyan ◽  
孙向阳 SUN Xiangyang ◽  
张涛 ZHANG Tao ◽  
付颖 FU Ying ◽  
...  
Keyword(s):  
Soil Water ◽  
Coastal Region ◽  
Photosynthetic Characteristics ◽  
Water And Salt Movement ◽  
Soil Water And Salt

Model Development and Application for Saline Water Irrigation in Arid Area in Inner Mongolia

2010 ◽  
Vol 168-170 ◽  
pp. 241-250
Author(s):  
Shu Qing Yang ◽  
Jin Feng Jia ◽  
Zhi Gang Ye
Keyword(s):  
Soil Water ◽  
Unsaturated Zone ◽  
Inner Mongolia ◽  
Saline Water ◽  
Model Development ◽  
Model System ◽  
Test Field ◽  
Movement Model ◽  
Water And Salt Movement ◽  
Soil Water And Salt

Taken Hongwei test field in the He Tao irrigation area of Inner Mongolia for research example, soil water and salt movement model system in regional unsaturated zone is established and tested, through the method of regional zoning. Detection results indicate that the calculated results from the model system agree well with the measured data. It is concluded that simulating and forecasting soil water and salt movement in regional unsaturated zone with this model system is feasible and authentic.

scholarly journals Soil Water and Salt Transport and its Influence on Groundwater Quality: A Case Study in the Kongque River Region of China

2019 ◽  
Vol 28 (3) ◽  
pp. 1637-1650
Author(s):  
Weihong Dong ◽  
Chuanlei Wen ◽  
Pan Zhang ◽  
Xiaosi Su ◽  
Fengtian Yang
Keyword(s):  
Groundwater Quality ◽  
Soil Water ◽  
Salt Transport ◽  
River Region ◽  
Soil Water And Salt

Photosynthetic characteristics in canopies of Quercus rubra, Quercus prinus and Acer rubrum differ in response to soil water availability

Oecologia ◽  
2002 ◽  
Vol 130 (4) ◽  
pp. 515-524 ◽  
Author(s):  
Matthew H. Turnbull ◽  
David Whitehead ◽  
David T. Tissue ◽  
William S. Schuster ◽  
Kim J. Brown ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Quercus Rubra ◽  
Acer Rubrum ◽  
Photosynthetic Characteristics ◽  
Soil Water Availability ◽  
Quercus Prinus

scholarly journals Understanding the Role of Shallow Groundwater in Improving Field Water Productivity in Arid Areas

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3519
Author(s):  
Xiaoyu Gao ◽  
Zhongyi Qu ◽  
Zailin Huo ◽  
Pengcheng Tang ◽  
Shuaishuai Qiao
Keyword(s):  
Soil Water ◽  
Soil Salinity ◽  
Water Productivity ◽  
Shallow Groundwater ◽  
Irrigation Scheduling ◽  
Crop Growth ◽  
Groundwater Depth ◽  
Groundwater Salinity ◽  
Arid Areas ◽  
Soil Water And Salt

Soil water and salt transport in soil profiles and capillary rise from shallow groundwater are significant seasonal responses that help determine irrigation schedules and agricultural development in arid areas. In this study the Agricultural Water Productivity Model for Shallow Groundwater (AWPM-SG) was modified by adding a soil salinity simulation to precisely describe the soil water and salt cycle, calculating capillary fluxes from shallow groundwater using readily available data, and simulating the effect of soil salinity on crop growth. The model combines an analytical solution of upward flux from groundwater using the Environmental Policy Integrated Climate (EPIC) crop growth model. The modified AWPM-SG was calibrated and validated with a maize field experiment run in 2016 in which predicted soil moisture, soil salinity, groundwater depth, and leaf area index were in agreement with the observations. To investigate the response of the model, various scenarios with varying groundwater depth and groundwater salinity were run. The inhibition of groundwater salinity on crop yield was slightly less than that on crop water use, while the water consumption of maize with a groundwater depth of 1 m is 3% less than that of 2 m, and the yield of maize with groundwater depth of 1 m is only 1% less than that of 2 m, under the groundwater salinity of 2.0 g/L. At the same groundwater depth, the higher the salinity, the greater the corn water productivity, and the smaller the corn irrigation water productivity. Consequently, using modified AWPM-SG in irrigation scheduling will be beneficial to save more water in areas with shallow groundwater.

Characteristics of soil water and salt associated with Tamarix ramosissima communities during normal and dry periods in a semi-arid saline environment

CATENA ◽  
2020 ◽  
Vol 193 ◽  
pp. 104661 ◽  
Author(s):  
Qiqi Cao ◽  
Benman Yang ◽  
Junran Li ◽  
Ruoshui Wang ◽  
Tao Liu ◽  
...  
Keyword(s):  
Soil Water ◽  
Tamarix Ramosissima ◽  
Saline Environment ◽  
Semi Arid ◽  
Soil Water And Salt

Modelling leaching and recharge in a bare transitional red-brown earth ponded with low salinity water in summer

1994 ◽  
Vol 34 (7) ◽  
pp. 1085 ◽  
Author(s):  
L Cai ◽  
SA Prathapar ◽  
HG Beecher
Keyword(s):  
Hydraulic Conductivity ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Soil Profile ◽  
Soil Surface ◽  
Saturated Hydraulic Conductivity ◽  
Rate Dependent ◽  
Water And Salt Movement ◽  
Winter Fallow

A modelling study was conducted to evaluate water and salt movement within a transitional red-brown earth with saline B horizon soil when such waters are used for ponding in summer. The model was calibrated using previously published experimental data. The calibrated model was used to evaluate the effect of depth to watertable, saturated hydraulic conductivity, and ponding water salinity on infiltration, water and salt movement within the soil profile, and recharge. The study showed that when initial soil water content and the saturated hydraulic conductivity (Ks) are low, infiltrating water will be stored within the soil profile even in the absence of a shallow watertable. Once the soil water content is high, however, recharge will be significant in winter, even if there is no net infiltration at the soil surface. Infiltration rates depend more on Ks than the depth to watertable if it is at, or below, 1.5 m from the soil surface. When Ks is high, recharge under ponding will be higher than that under winter fallow. Subsequent ponding in summer and fallow in winter tend to leach salts from the soil profile, the leaching rate dependent on Ks. During winter fallow, due to net evaporation, salts tend to move upwards and concentrate near the soil surface. In the presence of shallow watertables, leached salts tend to concentrate at, or near, the watertable.

Sign in / Sign up

Export Citation Format

Share Document