試題詳解

16. What happens to the major portion of phosphate fertilizers applied to rice crops?
(A) Phosphate precipitates and becomes unavailable.
(B)Rain provokes the leaching of phosphate into underground water, causing eutrophication.
(C) Rice plants take up and store phosphate it in their grains. It is then removed from the field when the grains are harvesteD.
(D) 85% of the phosphate is not taken up by plants and stays trapped in phytates in the soil.