C/N ratio can be taken as a rooting index of elm tip.

碳/氮比率可作为白榆新梢生根的指标。

youdao

Compared with C group, the variety of all index of YHJ group were better.

各时间点比较，YHJ组各指标变化明显优于C组。

youdao

Compared with C group, the variety of all index of YHJ group were better.

各时间点比较，YHJ组各指标变化明显优于C组。

youdao