However, the effect declined to a certain extent when the biochar underwent short-term (e.g., for several months) aging without soils, but the effect may persist and remain constant in long-term, which needs to be further studied.
However, the effect declined to a certainextent when the biochar underwent short-term (e.g., for severalmonths) aging without soils, but the effect may persist and remainconstant in long-term, which needs to be further studied.