Effect of Biochar on Stability and Enzymatic Activity of Sandy Soil Agglomerates Amended With Mulberry/Clover
In order to investigate the effect of biochar on the particle size distribution and stability of aggregates in sandy soil amended with mulberry/alfalfa,the particle size distribution and stability of aggregates in windy sandy soil,the content of soil organic matter and nutrients as well as the activity of soil enzymes were measured through indoor potting experiments to analyze their effects on the stability of aggregates.The results showed that the application of biochar could significantly improve soil organic matter and quick-acting nutrients;the particle size distribution of soil aggregates was better than that of mulberry/alfalfa mixed planting when mulberry was planted alone;the addition of 2％biochar to mulberry planted alone increased the stability of soil aggregates;Pearson analysis showed that the activity of soil phosphatase significantly affected the soil nutrient changes,and RD A analysis further showed that quick-acting potassium was the main environmental factor leading to the variation of soil aggregate stability,and biochar has obvious improvement effect on the stability of sandy soil aggregates amended by mulberry/alfalfa.
万方数据
维普
