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在作物与水分关系研究中,产量是确定耗水量的重要因子,但不是唯一因子,要同时考虑水分利用效率和经济效益.本文在试验资料的基础上,研究了夏玉米产量和耗水量的关系,运用最优分割理论对水水利用效率进行最优分割:同时对不同水分处理的籽粒产量、秸秆产量、水分利用效率和灌水费用等进行综合评判,进而确定夏玉米耗水量指标.然后对不同生育阶段耗水规律和降水时间分布进行了分析.为夏玉米田间水分管理和进行气候评价提供依据.
In the study of the relationship between crop and water, yield is an important factor to determine water consumption, but not the only factor to consider both water use efficiency and economic benefits.Based on the experimental data, this paper studied the relationship between summer maize yield and water consumption , The optimal partitioning theory was used to divide water use efficiency optimally: At the same time, the grain yield, straw yield, water use efficiency and irrigation cost of different treatments were evaluated synthetically to determine the water consumption index of summer maize The water consumption regularity during the growth stage and the distribution of precipitation time were analyzed, which provided the basis for summer maize field moisture management and climate assessment.