Usinging dicyandiamide (DCD) as reference material, field experiment was conducted to study the effect of N-lignin (ZAOL) on contents of nitrate and vitamin C in pakchoi.

• 利用双氰胺(DCD)为参照物,通过田间试验研究了含氮木质素(ZAOL)对小白菜硝酸盐和维生素C含量的影响。