The content of the available ferrum enhanced by recycled straws, but that of the available zincum, copper and manganese had no changed obviously in soil.
秸秆直接还田提高了土壤的有效铁含
,但对有效铜、有效锌和有效锰含
。
The content of the available ferrum enhanced by recycled straws, but that of the available zincum, copper and manganese had no changed obviously in soil.
秸秆直接还田提高了土壤的有效铁含,但对有效铜、有效锌和有效锰含。
：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦
代表本软件的观点；若发现问题，欢迎向我们指正。
