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

元素和微元素含随着生长有所增加，是波动不。

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、小、轻杂及灰尘等。