日期:2023-04-21 18:22
狀態:待解決
提問:kjcxac
ached to the peak in the second year, and total flavonoids reached to the peak in the fourth year.(3)The mineral elements showed various behavior among cultivating years, the contents of Ca, Mg, Mn and Cu accumulated to the maximum in the third year, the content of Fe decreased with increasing cultivating years, and the content of Pb increased with increasing cultivating years.(4)Crude protein content increased first and then decreased, and the same change trends were observed in the contents of
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