The correlation between the reducing sugar content in phloem and xylem and the ratio of damaged trees was not close.

 
  • 不同楊樹(shù)品系韌皮部和木質(zhì)部的還原糖含量與被害株率沒(méi)有相關(guān)性。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan