To effectively improve the soil salinization and secondary salinization problems in Jingdian irrigation area,the in-situ engineering remediation technology of saline alkali land was adopted.Radish was used as the test material to study the effects of different laying amounts(3.5,3.0,2.5,2.0,1.5,1.0 t·667 m-2)of aubergine saline barrier material on the plant growth,yield and quality of radish in the field conditions of Jingdian irrigation area,with the non aubergine salt and alkali barrier material as the control(CK).The results showed that under different level of aubergine saline barrier materi-al application,the 3.0 t·667 m-2 treatment had the lowest soil pH and total salt content,and the highest desalination rate of 38.80％.It also had the highest radish emergence rate of 95.24％.The leaf length,leaf width and leaf SPAD of radish in each fertility period were higher than other treatments.The leaf net photosynthetic rate,stomatal conductance transpira-tion rate,fresh and dry mass of aboveground and underground were all higher than other treatments and significantly high-er than CK,Among all the treatments,the 3.0 t·667 m-2 treatment had the highest soluble solids content and yield,which was 1.23％and 3 306.42 kg·667 m-2,respectively,and were significantly higher than the control CK.In summary,the goal of high quality and high yield of radish can be realized by laying 3.0 t·667 m-2 of aubergine saline barrier material on saline land in Jingdian irrigation area.
维普
万方数据
