The Humus Type of the "Kuroboku" Tea Garden Soil
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概要
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The humus type of the "Kuroboku" tea garden soil was compared with that of the cultivated and the uncultivated soils according to SIMON's and WAKSMAN'S methods, and the following results were obtained.<BR>1. The α-fraction was contained almost equally in these soils but the β-fraction was larger in both the cultivated and tea garden soil than in the uncultivated soil.<BR>2. The Simon's P. Q. and H. Q. values were the highest in the uncultivated and the cultivated soil respectively and those of the tea garden soil were. intermediate.<BR>3. The content of the true humic acid was small in every. soil and in the uncultivated soil, A-type of the true humic acid was contained larger than B-type but in the tea garden soil and cultivated soil, B-type 'was contained larger than A-type.
- 日本茶業技術協会の論文
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