Abstract:Tuber Mustards (Brassica juncea var.tumida) were studied in dry matter yield,mineral accumulation and nutrition quality,on the five levels of Sulfur (S) and Selenium (Se) fertilizer added to the soil.The results showed that the yields of dry matter were increased significantly by the addition of the S and Se to soil.The higher yields of dry matter were obtained in the treatments of S50Se1[S/Se=50 (mg/kg)/1 (mg/kg)] and S100Se1,with increases of 32.3% and 36.2%,respectively.All treatments could promote the absorption of nitrogen (N),phosphorus (P),potassium (K),S,Se in both leaves and tubers,but had no apparent effect on the other elements in leaves or tubers.The highest value of S content in leaf and tuber was related with the treatment of S100Se1,while the highest value of Se content in leaf and tuber was related with the treatment of S50Se3.In the aspect of tuber quality,the treatments of S50Se1 and S50Se3 could improve the quality of tuber significantly,including organic Se,total amino acid,and crude protein.In conclusion,the combination of S and Se fertilizer was feasible for tuber mustard in accumulating of mineral element,improving the dry matter yield and nutritional quality，and the treatment of S50Se1(S=50 mg/kg,Se=1 mg/kg) was recommended.
