Effects on Yield and Photosynthetic Characteristics of Greenhouse Cucumber by Different Irrigation Frequency

The effect of different irrigation frequency on growth photosynthetic characteristics and yield of cucumber in greenhouse targets were studied under drip irrigatioa The results showed that with the increase in the number of irrigation,plant height and stem diameter hacl a first cucumber increasing and then decreasing trend and reached 18 times the maximum irrigation,the photosynthetic rate increased as the irrigation frequency was increasing,but the difference was not significant when the highest yield of 18 irrigation,yield and growth parameters for cucumber,the photosynthetic rate was closely related,within a certain range,the more vigorous growth,the higher the photosynthetic rate,total output were higher.Yield and physiological parameters from the trend to consider for achieving high yield and water-saving effect of cucumber,greenhouse cucumber in mulched drip irrigation 18 times,the water use efficiency of the best, the best yield.