森林土壤有效養分測定方法之比較

本研究旨在探討Mehlich No.3(M3)，與acidic ammonium acetate-EDTA(AA-EDTA)兩方法取代慣用之Bray No.1及neutral ammonium acetate(AA)方法測定土壤肥力之可行性。經測定38個土系之臺灣森林土壤結果顯示：分別以M3，及AA-EDTA方法測定土壤有效性磷、鉀、鈣、鎂含量與慣用之方法相比，均成直線迴歸相關，相關係數均在0.9以上，只有磷例外，相關性達0.1%極顯著水準，並由其迴歸方程式可推算M3，及AA-EDTA方怯測值之肥力等級，作為植物有效養分元素狀況之指標。

關鍵字

土壤測定方法；土壤有效性養分

並列摘要

The purpose of this study was to study the possibility of using Mehlich No.3 (M3), and acidic ammonium acetate-EDTA (AA-EDTA) methods to replace the conventional methods of Bray No.1 and neutral ammonium acetate (AA) to test soil fertility. Thirty-eight soil series of Taiwan forest soil were selected for this study. The soil available phosphorus, potassium, calcium, and magnesium tested by M3 and AA-EDTA methods were linearly correlated to Bray No.1, and AA methods at the 0.1% significance level. The coefficients of correlation were all above 0.9 except for available phosphorus. The linear regression equations can be used to estimate the fertility level of soil tested by M3 and AA-EDTA methods, and we recommend their use as an index of the available nutrient status of soils.

並列關鍵字

soil testing method ； soil available nutrients

國際替代計量

森林土壤有效養分測定方法之比較

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