不同灌水次数对日光温室黄瓜产量和光合特性的影响

在膜下滴灌条件下,研究不同灌水次数对日光温室黄瓜的生长指标、光合特性及产量的影响。结果表明:随着灌水次数的增加,黄瓜株高和茎粗有着先增加后减少的趋势,灌水18次时达到最大值,光合速率随着灌水次数的增加呈增加的趋势,但差异不显著,灌水18次时产量最高,说明黄瓜产量与生长指标、光合速率关系密切,在一定范围内,生长越旺盛,光合速率越高,总产量越高。从产量与生理指标变化趋势来考虑,为实现黄瓜的高产及节水效果,日光温室黄瓜在膜下滴灌条件下,灌水18次时,水分利用效率最佳,产量最好。

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.