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中文摘要：
以旱作水稻为试验材料，采用膜下滴灌的方式，以不同生育期土壤水分水平为试验因素，对旱作水稻分阶段进行不同土壤水分下限控制处理，测定水稻的耗水量、产量及水分生产效率，进而研究不同生育期、不同土壤水分状况对旱作水稻耗水量和产量的影响，确定旱作水稻的水分生产函数。结果表明：土壤水分对水稻产量的影响规律为拔节孕穗期最大，抽穗开花期与分蘖期次之，乳熟期较小；通过对Jensen模型计算，得出水分生产函数的敏感指数为：拔节孕穗期〉抽穗开花期〉分蘖期〉乳熟期，与水稻好水规律一致；各生育期土壤水分保持在田间持水率的90％左右，既可获得高产，也使水分生产效率达到较大水平，实现高产与高效的统一。
英文摘要：
The amounts of water consumption, yield and water use efficiency of rice in aerobic soil were determined under different soil moisture treatments at different growth stages in experiment. We discussed the effects of different soil moisture treatments at different growth stages on the amounts of water consumption, yield and water use efficiency, and determined the water produetion funetion The results showed that effects of soil water deficit on yield were related with rice growth periods, and it had the greatest effect in the jointing-booting stage,and then in heading-flowering stage and tillering stage,and had litle effect in milk stage. The order of water sensitivity indices calculated by the Jensen model was jointing-booting stage〉heading-flowering stage〉tillering stage〉milk stage, which was similar to the pattern of water consumption. The 90% of oil moisture of field water capacity at every stage. The treatment got not only the best yield, but also the better water use efficiency, and achieved both high yield and high efficiency.
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