| Cite this article: | 樊丽琴,沈婧丽,王旭.微咸水-改良材料协同调控对碱化土壤水盐运移的影响[J].灌溉排水学报,0,():-. |
| FAN Li-qin,SHEN Jingli,WANG Xu.微咸水-改良材料协同调控对碱化土壤水盐运移的影响[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 719Times Download 0Times |
|
|
|
| DOI： |
|
| Effect of Synergistic Regulation with Brackish Water and Improvement Material on Water and Salt Transport in Alkaline Soil |
|
FAN Li-qin, SHEN Jingli, WANG Xu
|
|
Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry Sciences
|
| Abstract: |
| The Coordinated Regulation on brackish water irrigation and improved materials is an effective way to improve alkaline soil under the background of water shortage. Through the one-dimensional vertical soil column infiltration test, the effect of combined different brackish water and different improvement material on water and salt transport in alkaline soil was studied. The results showed that: (1) the water infiltration rate and the cumulative infiltration water amount is the largest in the "phosphogypsum" treatment, followed by the "ferrous sulfate + citric acid" treatment. The differences between treatments became smaller with the salinity increase of leaching water (2) under the leaching water with 1.2 g? L-1 salinity, compared with the control, the total salt content in 0-40 cm soil layer of "phosphogypsum" and "ferrous sulfate + citric acid" treatment was significantly decreased by 31.70% and 30.69%, respectively, but under the leaching water with 3.6 g? L-1 salinity, the two treatment would increase salinity of the upper soil. （3）The content of Na+ , Cl-, HCO3-and CO32- in 0-30 cm soil layer of“phosphogypsum”treatment was significantly decreased, but the leaching effect of Na+ and Cl- decreased with the salinity increase of leaching water. In 0-10 cm soil layer, the "ferrous sulfate + citric acid" treatment significantly reduced CO32- content under the leaching with the lower salinity water（1.2 g? L-1 and 2.4 g? L-1） and HCO3- content under the leaching with the higher salinity water（3.6 g? L-1）. (4) the "ferrous sulfate + citric acid" treatment had the same effect on decreasing soil pH value of 0-10 cm soil layer with the "phosphogypsum" treatment, but the latter had a more obvious effect on decreasing soil pH value of 0-30 cm soil layer, especially 10-20 cm soil layer. |
| Key words: brackish water; improved materials; alkalized soil; soil salt ions; soil pH value |
|
|
|
|
|
|
