plant n concentration 中文意思是什麼

plant n concentration 解釋
植株
  • plant : n 1 植物，草木 （opp animal）; 草本；〈商用語〉樹秧，苗木。2 莊稼，作物，收獲；（植物的）生育。3 ...
  • n : 1. 【羅馬數字】90〈N＝90000〉。2. 【化學】＝nitrogen. 3. ＝North（ern）。N ＝nuclear 核的：N-waste 核廢料。
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera, nerium indicum, rumex japonicus and their mixture was studied. differences of the snails mortality were studied also. the three kinds of plant material could kill the snail effectively both in spring and in autumn. but the mortality was different when the experiment is done in different seasons or with different lixivium. the effect in spring was better than that in autumn. n. indicum was the most effective among the three kinds. the effect by mixture was better than that by unitary material, and the effect by the mixture of the three kinds was better than that by two kinds. the variance analyses showed that the experiment could be modified, and some ingredients concentration in mixed lixivium could be reduced. the experiment was valuable in enhancing the power of killing the snail and saving plant material

    對楓楊、夾竹桃和土大黃以及它們的組合水浸液的滅螺效果作了比較研究，結果表明: （ 1 ）滅螺效果均隨水浸液濃度的增高而增強; （ 2 ）這3種植物材料及其組合水浸液的滅螺效果都是春季比秋季好; （ 3 ）組合水浸液的滅螺效果比單一植物材料水浸液的滅螺效果好; （ 4 ）方差分析的結果說明植物材料組合水浸液滅螺在保證滅螺效果的前提下，還可以適當降低組合水浸液中的濃度.以上結論對提高植物材料的滅螺效率和節省植物材料的使用量有著重要的意義，同時也為組建植物滅螺群落提供了有益的參考
  2. Concentration of the same macro element varied significantly with different plant parts. as for n and p, the variation followed the sequence of flower > leaf > root > stem, and the order was flower > leaf > stem > root for k, as well as leaf > root > flower > stem for ca. maximum content of mg was found in leaf while minimum value was detected in stem

    不同部位微量元素含量不同，以fe差異最大（根葉fe含量最高，莖和花較低） ； cu含量為根葉花莖； mn為葉花根莖； zn含量以葉最高，莖次之，花最低： b含量順序與zn類似； mo在所有部位中含量均偏低，以葉最高，根次之。
  3. Nh4c depletion in the pore water concentration and low n / p ratios ( 3. 7 by weight ) within the macrophyte biomass at the end of the growing period suggest that available n limits plant growth

    孔隙水濃度中nh4c的消耗和大型動植物生長末期的低氮/磷比率（重量上佔百分之3 . 7 ）表明，有效的氮元素限制了植物的生長。
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