Предмет: Другие предметы, автор: fargered

вещество повышающее плодородие почвы

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Автор ответа: nast921

Это гумус. Гумус — основное органическое вещество почвы, содержащее питательные вещества, необходимые высшим растениям . Гумус составляет 85—90 % органического вещества почвы и является важным критерием при оценке её плодородности. ...

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