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室内盆栽条件下研究了高肥和低肥条件下,水分胁迫对高粱、糜子幼苗光合作用及水分利用效率的影响。结果表明,高肥条件下高粱、糜子的光合速率较高,光合降低的叶水势阈值较低,水分利用效率较高。增加土壤肥力可以减轻缺水对光合速率的影响,提高作物的水分利用效率。
Effects of water stress on photosynthesis and water use efficiency of sorghum and barley millet seedlings under high and low fertilization conditions were studied under potted condition in pot experiment. The results showed that the photosynthetic rate of sorghum and millet were higher under high fertilizer conditions, and the threshold of leaf water potential with lower photosynthesis was higher and the water use efficiency was higher. Increasing soil fertility can reduce the effects of water deficit on photosynthetic rate and improve the water use efficiency of crops.