Study On The Adaptive Physiological Response Of Forage Grass To Furfural Residue Under Saline-alkali Stress

The Songnen Plain is one of the three soda saline areas in the world,and land salinization has become an important factor hindering agricultural development in China.The purpose of this study is to explore the soil characteristics of saline-alkaline soil and the cultivation adaptability of plant growth through the application of furfural dregs,so as to provide a scientific basis for the rational use of furfural dregs in saline-alkali soils.In this study,the amount of furfural residue was determined based on the soil quality.On the basis of the preliminary experiment,it was determined that the experiment consisted of 3 treatments of saline-alkali soil with the addition of 0,5%,and 10% furfural residue.Three kinds of forages and vetch seeds were potted under greenhouse conditions for 3 months.Determination of the biomass,soluble sugar,chlorophyll,proline,malondialdehyde,superoxide dismutase,peroxidase and catalase of three forages;determination of soil properties after planting forages and diversity with soil microorganisms The change.After adding furfural residue,the soil pH and salt content decrease.The addition of furfural residue can increase the content of total nitrogen,total phosphorus and total potassium in the soil,and the greater the amount of furfural residue,the greater the content of each nutrient;the soil after adding furfural residue The microbial diversity is high,and the microbial diversity of furfural residue with 5% dosage is higher than others.After adding furfural residue,the soil total nitrogen,total phosphorus and total potassium content of alfalfa increased;soil bacterial diversity increased,among which Proteobacteria,Actinobacteria and Gemmatimonodates were Dominant phylum;the plant height,biomass,soluble sugar content,chlorophyll content,proline content and antioxidant enzyme activity of alfalfa increased,and the treatment effect with 5% furfural residue was the best.After adding furfural residue,the total nitrogen,total phosphorus and total potassium content of the soil planted in Astragalus adsurgen increased,and the soil bacterial diversity increased,including Proteobacteria,Actinobacteria and Gemmatimonodates is the dominant phylum.The plant height,biomass,soluble sugar content,chlorophyll content,proline content and antioxidant enzyme activity of Astragalus adsurgen increased,and the treatment effect with 5% furfural residue was the best.After planting vetch,the soil total nitrogen,total phosphorus and total potassium content increased.After adding furfural residue,the soil total nitrogen,total phosphorus and total potassium content of Vicia villosa roth plantation increased,and soil bacterial diversity increased,mainly manifested in Proteobacteria,Actinobacteria,Firmicutes and Chloroflexi became the dominant phylum.The application of furfural residue increased the content of chlorophyll,soluble sugar and proline in the leaves of Vicia villosa roth.Significantly enhanced the activity of antioxidant enzymes of Vicia villosa roth.The application of furfural dregs obviously promoted the growth and development of Vicia villosa roth seeds,and increased the biomass of seedlings of Vicia villosa roth seeds.The treatment with 5% furfural dregs had the best effect of improving saline-alkali soil.In short,the addition of furfural residue indirectly affects the soil microbial bacterial community by changing the physical and chemical properties of the soil,mitigating the damage of plants caused by saline-alkali stress,thereby promoting the growth and development of plants.The study is a reasonable application of furfural residue in soil improvement and plant adaptive cultivation Provides scientific basis and reference.