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題名 | 文心蘭非破壞性量測與葉片葉綠素研究=Study of Non-destructive Measurement and Leaf Chlorophyll Concentration for Oncidium |
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作者 | 陳加忠; | 書刊名 | 農林學報 |
卷期 | 51:2 2002.06[民91.06] |
頁次 | 頁61-75 |
分類號 | 435.431 |
關鍵詞 | 文心蘭; 非破壞性量測; 葉綠素; Oncidium; Non-destructive measurement; Chlorophyll concentration index; |
語文 | 中文(Chinese) |
中文摘要 | 在此研究開發一項非破壞性技術以測量文心蘭葉片與偽莖的乾物重用以研究文心蘭 的生長模式。測定之文心蘭樣本的物理量以葉片長度與最大寬度之乘積定義為K值,葉面積 與K值具有線性關係。以自然對數轉換之葉片乾物重與k值之線性關係為最適切之經驗公 式。對第1葉片至第3葉片而言,上述之關係函數並無顯著不同。第4葉片之關係函數則顯 著不同於其他葉片。偽莖乾物重與長度、寬度之乘積為對數函數關係。以SPAD 502葉綠素 計對葉片葉綠素指數之量測值與葉片氮含量有顯著之直線函數關係,然而葉綠素指數與光合 作用能力並無相關。在葉片的葉綠素指數分佈量測結果顯示第1葉與第2葉片其葉綠素分佈 不受量測位置而有所差異。以葉綠素指數計進行肥培之管理技術需要更進一步研究。 |
英文摘要 | A nondestructive measurement for dry-weight and leaf area estimates is very important for analyzing growth models of Oncidium. The relationship between dry weight of leaves, pseudobulb and other physical properties need to be established in advance. Five dimensions of physical properties of Oncidium leaves and pseudobulb are measured in this study. The product of leaf length an maximum width was defined as K values. The leaf area had the linear relationship with K value. The linear function between logarithmic dry weights and logarithmic K values was the adequate model by regression analysis. NO significant difference could be found among data sets of three leaves with this model by statistical F test. The logarithmic dry weights of pseudobulb and logarithmic values of products of length and width had the linear relationship. The chlorophyll concentration index of leaves measured by SPAD 502 meter had the significant relationship with the nitrogen concentration of leaves. However, no significant relationship could be found between the chlorophyll concentration index of leaves and photosynthesis rates. The chlorophyll concentration index of L1 and L2 leaves did not affected by measuring positions. The technique of using chlorophyll meter to help fertilizer management need to be further study. |
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