Grassland soil - Sochidojo

Japanese: 草地土壌 - そうちどじょう
Grassland soil - Sochidojo
This refers to soil that forms natural grassland (pasture) or artificial grassland (grassland). Grassland soil is soil that is distributed in grasslands as natural vegetation, whereas grassland soil is important as a roughage producing area or feeding area for herbivorous livestock. Most grassland soil in Japan is volcanic ash soil, so its general properties are almost similar to those of volcanic ash soil. However, what makes it different from normal volcanic ash soil is that it contains a significantly large amount of humus in the 0-3 cm soil layer because it is hardly cultivated or fertilized, and it also has a large degree of phosphorus deficiency.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
自然草地(牧野)または人工草地(牧草地)を形成している土壌をいう。草原土壌が自然植生としての草原に分布する土壌であるのに対し,草地土壌は草食家畜の粗飼料生産地あるいは飼養の場としての意義が大きい。日本の草地土壌は大部分が火山灰土壌であるから,その一般的性質はほとんど火山灰土壌の性質と類似している。しかし,通常の火山灰土壌と異なる点は耕耘(こううん),施肥がほとんどなされないため0~3cmの土層の部位に著しく多量の腐植を含み,かつリン酸欠乏の程度も大きい。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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