noun
lime fertilizer; calcium fertilizer
Agricultural term for fertilizer made from lime or calcium compounds, used to improve soil acidity and supply calcium.
酸性土壌を改良するために石灰肥料をまく。
We spread lime fertilizer to improve the acidic soil.
Compound of 石灰 (lime) and 肥料 (fertilizer). The exact historical derivation is straightforward; the term is a modern technical compound.