Abstract: With perennial greenhouse Chinese chive as experimental materials, 10 mmol/L sulfur as total,to study the effects of inorganic sulfur forms on the nitrate content of Chinese chive, nitrogen metabolism and nutrition-al quality.Experimental results show that, the combined application of NaHSO₃ and Na₂S₂O₃ can significantly im-prove the activities of nitrate reductase ( NR), glutamic-oxaloacetic transaminase ( GOT), glutamic-pyruvic transam-inase ( GPT ), and reduce the nitrate content effectively, especially, the effect of 7.5 mmol/L NaHSO₃ +1.25 mmol/L Na₂S₂O₃ is the best,and it can decrease 35.79%.After sulfur treatment,and the content of soluble pro-tein,free amino acids,soluble sugar,Vitamin C in Chinese chive leaves increases in different degrees, especially, free amino acids has the greatest increases.2.5 mmol/L NaHSO₃ +3.75 mmol/L Na₂S₂O₃ ( S7 ) increases 88.89%,and 5 mmol/L Na₂S₂O₃ (S4) increases 83.33% and soluble protein (A1P) increase.Meanwhile,the combined application of NaHSO₃ and Na₂S₂O₃ can also promote the accumulation of dry matter Chinese chive, and increase chives plant height and fresh weight.

Key words: InoRganic sulfuR foRm, Chinese chive, NitRate Reduction and assimilation, NitRogen metabolism activities of key enzymes

CLC Number: 

• S633.3