| Decreased energy consumption of heating in greenhouse and overcame high temperature disorder in open field in summer-autumn were the two keys of cucumber's efficient cultivation.This study simulated different heating integrations to effect cucumber's sexual differentiation,growth and development,fruit yield formation and physiological characteristics by using intelligent greenhouse and the influences of different plant density and frame modes to cucumber's growth and development and yield formation of fruit in summer-autumn were also studied.The results showed:1.In the study of simulating different heating integrations in greenhouse, blooming date and node of the first female flower in low temperature treatment at night were significantly advanced and decreased,but the female flower number and node rate of female flower can not be improved remarkably in high temperature in the daytime and low temperature at night.By contrasted the Ck and treatment C,the treatment of high temperature in the daytime and low temperature at night enhanced the plant height,the number of leaves,leaf fresh weight,leaf dry weight,stem fresh weight,stem dry weight,fruit fresh weight,fruit dry weight,plant fresh and dry weight and plant growth rate remarkably.It's 235.37 cm,31.5个,150.90 g,20.53 g,118.20 g,10.62 g,903.57 g,44.93 g,1172.67 g,76.08 g和0.92 g·d-1.Cucumber's growth and development and dry matter accumulation were more suitable when the day and night temperature difference was 10℃.2.The influences of cucumber's different heating integrations in greenhouse to the root system activity and photosynthesis physiological indexes in leaves showed that the root system activity,the content of soluble sugar,the content of photosynthesis pigment(chlorophyll-a,chlorophyll-b,total chlorophyll and carotenoid ) and photosynthesis rate were significantly enhanced by high temperature in the daytime and low temperature at night.And it had remarkably influenced to the content of carotenoid,photosynthesis rate,root system activity and the content of soluble sugar,but have no obviously effect to the other physiological indexes. 3.The influences of different planting modes to cucumber's growth and development in summer-autumn showed that dry-fresh ratio of stem-leaf,plant height and fruit yield per area were significantly improved in the plant density of 25×75 cm. Fence frame modes can remarkably enhanced the dry and fresh weight of stem-leaf, dry and fresh weight of plant and plant growth rate,but had no obviously effect to another indexes of plant growth and development in cucumber.Cucumber's yield per area,individual yield and plant height were improved by the fence frame modes in 25×75 cm.
|
PDF Full Text Request