熟畑化過程における雑草植生の変遷に関する研究 : 第6報原野から熟畑に至る過程における雑草植生の変化

概要

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The qualitative change of the weed vegetation was largely due to the change in chemical characters of the soil. Among them, soil pH, base exchange acidity and the saturation degree by calcium seemed to play an important role. Under the soil conditions of lower pH (less than 4.4), lower base exchange acidity (more than 10.0) and lower saturation degree by calcium (less than 20%), the weed vegetation was field type. When the chemical characters of the soil were within the ranges of pH 4.4〜5.0, base exchange acidity 10. 0〜1.0 and saturation degree by calcium 20〜50%, the weed vegetation was unripened farm type. Under the conditions of higher pH (more than 5.0), higher base exchange acidity (less than 1.0) and higher saturation degree by calcium (more than 50%), the vegetation converted to ripened farm type.
日本雑草学会の論文
1978-08-25