fixation of atmospheric nitrogen

Based on this case,the analysis is made and the counter measures for improving the regulations on stationary atmospheric pollution source control are presented.

通过实例,对企业废气虽然达标排放,但却造成污染扰民问题进行探讨,并通过进一步分析,提出解决完善固定大气污染源控制法规和标准的对策及建议。

Comparision of two methods used to study the biological nitrogen fixation and nitrogen transfer from peanut to rice in aerobic soil of intercropping system;

用~(15)N富积标记和稀释法研究旱作水稻/花生间作系统中氮素固定和转移