Effects of Water-Saving Renovation Projects on Soil Salinization in Irrigated Areas
In order to explore the effect of water-saving renovation measures on the salt content of soil in salinized irrigation areas,the salt content of soil in different soil depths,different regions,and different times was compared by setting point sampling measurements.The results showed that when water-saving renovation was not conducted,the salt content of surface soil was higher before autumn irrigation,at 3.44g/kg,and after autumn irrigation,the soil content at each depth decreased by 29%,28.7% and 20.9%,this indicates that it has a good effect on the leaching of soil salt.The variability of soil depths from 0 to 10 cm,from 10 to 30 cm,and from 30 to 50 cm was strong variability,medium variability and medium variability.In the buffer zone,there is a linear negative correlation between soil salt content and channel distance,that is,with the increase of distance,soil salt content gradually decreases.When the distance increases,the salt content in the soil layer at a depth of 30 to 50 cm decreases faster than in the soil layer at a depth of 0 to 30 cm.After taking water-saving renovation measures,the average decrease rate of soil salt content in the short-term buffer zone is lower than that in the long-term renovation zone.After experiencing autumn irrigation,the buffer zone's ability to interpret soil salt content has improved,indicating that autumn irrigation can alleviate the surface accumulation of salt in the soil to a certain extent.
water saving transformation measuressalinized irrigation areasclassical statistical methodbuffersoil salt content
NETL
NSTL
万方数据
维普
