biochar
A yellow pigment, consisting essentially of sulfide and oxide of arsenic.
Of or pertaining to Frédéric Chopin.
Charcoal that is used as a soil conditioner.
plural of ranger
農家は土壌改良材として用いられる木炭を培養土に混ぜ、水分保持と養分の利用効率を高めた。
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