| Study on appropriate irrigation controling index for cucumber during initial bloom stage |
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| DOI：10.7606/j.issn.1000-7601.2011.03.09 |
| Key Words: cucumber initial bloom stage irrigation minimum water use efficiency fruit quality |
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| Abstract: |
| Physiological indexes， morphological indexes， yield, fruit quality and water use efficiency of cucumber
were studied under different soil irrigation minimums during initial bloom stage in pot experiment. The results showed: the diurnal course of physiological indexes of cucumber was displayed in single peak pattern curves in initial fruit stage and mid-fruit stage，while the diurnal course of physiological indexes of cucumber was displayed in a two-peak pattern curve in early fruit stage. Stomatal conductance, transpiration rate and net photosynthetic rate showed the same variation. The effect of different soil moisture on physiological indexes , morphological indexes, yield, fruit quality and water use ef-ficiency was significant during early fruit stage and mid fruit stage. Fruit weight，fruit length, yield and water use effi-ciency were gradually increasing with the irigation minimums reducing from 75% field water capacity to 55% field water capacity. The treatment with irrigation minimum of 55% field water capacity could get not only higher photosynthetic pa-rameters and morphological indexes but also the best yield, fruit quality and water use efficiency. |
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