【摘要】 川中丘陵区小麦耗水特性，及“三水”对小麦产量的作用研究结果表明：小麦耗水量随小麦生长逐渐增大，到拨节至籽粒乳熟阶段达最大，其后逐渐减小；小麦产量与其耗水量呈极显著正相关；在该区小麦大面积生产中，小麦耗水主要来源于同期降水，底墒水对小麦供水虽比例不大，但对小麦稳产高产有着重要的作用，表现为小麦产量与土层厚度呈极显著正相关；干旱时通过灌溉抗旱对小麦有一定增产作用。更多还原

【Abstract】 This paper studied the characteristics of wheat evapotranspiration,relationship between wheat evapotranspiration and wheat yield,and the roles of "three kinds of water" on wheat yield in the hilly area of Sichuan Basin.The results showed: wheat evapotranspiration gradually increased with wheat growth,reached the highest in elongation to milk stage,then gradually decreased;wheat yield was significantly positively with wheat evapotranspiration;in the present wheat production water of wheat evapotranspiration mainly came from the precipitation in this period,wheat-absorbed water from soil made up the low ratio,but played an important role in steady and high yield of wheat and it was significantly positively correlated between wheat yield and soil depth;irrigation had some effect on wheat yield increase under drought.更多还原