The economic yield of rice was also increased and the increment at the medium and high level of nitrogen was 21.8% and 21.5%, respectively.
使水稻经济产量显著增加，中用量和高用量水平处理经济产量增加幅度分别为21.8%和21.5%。
The metabolic balance of the creatinine and urea nitrogen tend to be stable in the long-term strere, but the stabilization is in a high level .
各组织中尿素氮的代谢平衡在长期应激时趋于稳定，但这种稳定是建立在较高水平基础上。
This may occur in response to a high level of reduced nitrogen in the medium.
由于对培养基中高水平的还原氮的反应而发生的。
应用推荐