Effect of different levels of shading on yield and fruit quality of cucumber ( Cucumis sativus ).

摘要

The extra light intensity or light stress in summer is a restrict factor in many area of the world. The effects of different levels of solar radiation interception were studied on growth and yield of cucumber hybrid Super Dominus in field. One month cucumber seedlings were transplanted under curtains making different levels of shading 15, 35 and 60% of solar radiation and full sunlight, as control. The experimental design was completely randomized with four replicates and each experimental unit includes 10 plants. The results showed that increasing shading density up to 35% led to an increase in the number of fruits per plant. However, the number of fruits tended to decrease as shading density increased to 60%. Shading density greatly influenced the physiological disorders like sun-scald of cucumber fruits. The result also suggested that plants submitted to 35% shading showed the highest yield.