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題名 | 雙重接種對銀合歡生長和養分吸取量之影響 |
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作者姓名(中文) | 潘富俊; 程煒兒; | 書刊名 | 林業試驗所研究報告季刊 |
卷期 | 3:4 1988.12[民77.12] |
頁次 | 頁209-223 |
分類號 | 436.253 |
關鍵詞 | 生長; 吸取量; 接種; 銀合歡; 養分; 雙重; |
語文 | 中文(Chinese) |
中文摘要 | 本研究觀察不同pH值土壤和不同接種處理對4個月大銀合歡(K28) 苗 木之影響,結果顯示:雙重接種,接種菌根菌之銀合歡苗木的高生長,地際直徑, 乾重均比單獨接種根瘤菌和不接種者為佳。土壤pH值也影響苗木之生長,各種 生長均隨pH值增加而增加,但pH7.0以後則生長下降,銀合歡最適生長之pH 值為6.0-7.0,雙重接種之生長比未接種之銀合歡在酸性土壤之生長優良。接種處 理亦影響養分之吸取量,其中N與Ca之吸取量以雙重接種者最高,單獨接種菌 根菌者次之,接種根瘤菌和完全不接種者最少。P, K,Mg,Mn,Zn之吸取量 則雙重接種和接種菌根菌者差異不顯著,唯高於接種根瘤菌和不接種者。土壤 pH值亦影響苗木養分吸取,N,P,K,Mg,Mn, Zn之吸取隨pH值遞升而增 加,至pH6-7達最高點,超過pH7.0則吸取量下降。Mn吸取量隨土壤pH值之 升高而下降,Ca則隨土壤pH值提高而增加。銀合歡苗木生長量和養分吸取量都 受到銀合歡pH值和不同接種處理之交感效應。苗木之葉面積雙重接種者為不接 種對照之17倍;菌根感染率則在pH5.0- 6.0時最高。 |
英文摘要 | A pot culture experiment was conducted to study the effect of soil pH value and different inoculation treatments on growth of 4-month old seedlings in Leucaena leucocephala (K28). The results are showed as follows: Dual inoculation and mycorrhiza inoculation alone increased height growth, root collar and dry weight in leucaena seedlings. The increase was highly significant over the treatment of rhizobium inoculation alone and control. Soil pH value also affected seedling growth. Every growth component was increased accordantly with the increasing soil pH to 7. The most suitable pH values for leucaena growth were 6 to 7. Leucaena seedlings with dual inoculation were observed to adapt acid soils. Inoculation treatments also influened nutrient uptake in leucaena seedlings. Dual inoculated seedlings had highest N and Ca uptake. The content of P, K, Mg, Mn and Zn in dual inoculated and mycorrhiza-alone seedlings had no significant difference, but both were higher than the rhizobium-alone and control once. The effect of soil pH values on the nutrient uptake was also prominent. There was a pronounced increase in tissue concentrations of N, P, K, Mg, Zn and Ca with increasing soil pH (4.2 to 7). On the contrary, Mn reduced in correlation with gradients in soil pH. Interaction between soil pH value and inoculation treatment was observed in both growth and nutrient uptake of leucaena seedlings. Leaf area of dual inoculated seedlings was obsearved to be 17 time of the control ones. Seedlings in pH 5.0-6.0 soils had highest root infection. |
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