Comparative analysis of the effects of two types of biochar application on coastal saline soil and plants
The amelioration of coastal saline soil for landscaping purposes is paramount to both expanding gardening and greening areas and fostering the development of diverse ecological landscapes.It is a necessary measure to enhance the quality of urban ecological environment and enrich the diversity of greening.The aim of the study was to compare and analyze the application effects of two types of biochar on coastal saline soil,by evaluating their impacts on the improvement of soil physicochemical properties and plant growth.Indoor pot experiments were conducted using the ground cover plant Tagete patula L.to investigate the impact of various application rates(0.5％,1％,and 5％w/w)of sludge hydrochar and rice husk biochar on the physical and chemical properties of saline-alkali soils.The effects of these amendments on the growth and physiological and biochemical responses of Tagete patula L.were also evaluated.The results showed that sludge hydrochar applications at a level of 1％achieved the most significant improvement.After amendment with sludge hydrochar,the salt content of the saline-alkali soil decreased significantly,while the soil organic matter,total phosphorus and total nitrogen increased significantly.Redundancy analysis further revealed that sludge hydrochar effectively reduced ion stress and improved soil nutrient status.Furtherly,this facilitated the growth and vitality of roots,while regulating the impact of salt and alkali stress on biomass accumulation and promoting its accumulation.The application of sludge hydrothermal carbon in coastal saline soil landscaping land is feasible from the perspective of nutrient and growth of plant.However,its long-term safety needs further research and evaluation to ensure its environmental sustainability.This study will provide a scientific evidence for the amelioration of coastal saline soil landscaping land.
sludge hydrocharrice husk biocharcoastal saline-alkali soilTagete patula L
万方数据
维普
