作者: Guobao Song , Li Che , Yangang Yang , Felichesmi Lyakurwa , Shushen Zhang
DOI: 10.1080/10042857.2014.886759
关键词:
摘要: … That is to say, the level of crop residues in the areas eastward of Huhuanyong Line obviously is lower than the areas westward to Huhuanyong Line. Crop residues are distributed with a …