Yield potential and attained in global maize area Yield potential of rainfed maize A and irrigated maize B Attained yield potential in current rainfed C and irrigated maize D按照图注的格式修改上面的句子

Yield potential and attained in global maize area: (A) Yield potential of rainfed maize and (B) yield potential of irrigated maize. (C) Attained yield potential in current rainfed maize and (D) attained yield potential in current irrigated maize.