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在不同土壤水分胁迫条件下，研究了水浇地小麦品种鲁麦７号和旱地品系莱农８８３４各生育阶段的水分利用效率。结果表明，小麦拔节前水分利用效率较低，拔节后增高，以拔节至开花阶段最高；在水分充足条件下，鲁麦７号水分利用效率高于莱农８８３４，在水分胁迫条件下则反之。拔节期以后土壤水分含量保持在田间持水量的６０％以上的地块宜采用水浇地品种，６０％以下者宜采用耐旱品种。
Under different soil water stress conditions, the water use efficiency of different irrigation stages of irrigated wheat cultivar Lumai 7 and dry land cultivar Lainong 8834 was studied. The results showed that the water use efficiency of wheat before jointing was lower than that after jointing, and it was the highest at jointing stage to the flowering stage. Under adequate water conditions, the water use efficiency of Lumai 7 was higher than that of Laion 8834, and under the condition of water stress . After the jointing period, the soil moisture content should be more than 60% of the field water capacity should be irrigated varieties, 60% should adopt the drought-tolerant varieties.