Water deficits were found to affect panicle number and grain number per panicle in lowland rice, while panicle number and percent grain-filling were reduced in upland rice.

• 在产量构成性状上，乾早处理明显降低参试水稻品种之穗数与一穗粒数及陆稻品程（系）之稔实率及穗数。