Researches on the Nox emission characteristics of HT (Huangtai coal),LC(Laicheng) coal are carried out in different atmosphere. The results show that the Nox em
Species diversity and stability of natural secondary communities in different layers with different cutting intensifies 10 years later were investigated by calc
In order to establish methods for indentification and screening of rice genotypes with high nitrogen (N) efficiency,N absorption efficiency (NAE),N utilization