無氮素化合物 的英文怎麼說

中文拼音 [dànhuà]
無氮素化合物 英文
non nitrogenous chemical compound
  • : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
  • : 名詞[化學] nitrogen (7號元素, 符號n)
  • : Ⅰ形容詞1 (本色; 白色) white 2 (顏色單純) plain; simple; quiet 3 (本來的; 原有的) native Ⅱ名...
  • : 合量詞(容量單位) ge, a unit of dry measure for grain (=1 decilitre)
  • : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
  1. When inadequate n was added, the chloroplast structure in mesophyll cell was damaged in ear leaf, the amount of carbohydrate decreased in mestome sheath, and excessive n - redistribution and n - transportation to grain from vegetative mass appeared, which resulted in earlier leaf senescence. excessive n application led to too high activity of nitrate reductase, excessive vigorous nitrogen metabolism and too much exhaustion of carbohydrate in ear leaf, which resulted in the lack of enough carbohydrate in the lower leaf, meanwhile, the expansive chloroplast grana lamellae in leaf mesophyll cell and starch grain without nuclear in mestome sheath cell was observed, which led to the decrease of chlorophyll content and photosythetic capacity in maize leaf, then the early senescence occured

    肥用量不足導致穗葉葉肉細胞葉綠體結構性差,維管束鞘細胞碳水累積減少,營養體再分配率大而引起葉片早衰;而過量供則導致生長後期硝酸還原酶活性過高,代謝過旺,消耗了大量碳水,以致下位葉不能得到充足的碳水供應而提早脫落,同時葉肉細胞葉綠體片層結構膨脹,呈「肉汁」特徵,維管束鞘細胞澱粉粒大量消耗,核澱粉粒出現,從而葉片葉綠含量下降,光能力降低而出現早衰。
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