The contents of trace elements and mesne elements changed gently in the growing season.

中量元素和微量元素的含量随着生有所增加，是波。

Can tidy up the wheat,paddy,rice,oil plants mesne big,small,light mixed and lampblack end.

能有效清理小麦、稻谷、玉米、油料中的、小、轻杂及灰尘等。