Effects of LED interlighting on yield and photosynthesis of tomato in solar greenhouse
[Objective] This study investigated the effects of different LED interlighting on tomato yield,photosynthesis and dry matter production in solar greenhouse.[Method] Tomato cultivar "Ruifen 882" was planted in a solar greenhouse and three red/blue light ratios (R/B=4 ∶ 1,R/B=7 ∶ 1 and R/B=9 ∶ 1) and no LED interlighting (CK) were applied.[Result] Compared with CK,interlighting treatments significantly increased tomato yield with the increases of 25.9％,28.5％ and 22.7％ for R/B=4 ∶ 1,R/B=7 ∶ 1 and R/B=9 ∶ 1,respectively.The total aboveground dry matter amounts were increased by 26.2％,30.4％ and 28.4％ and the fruit dry weights were increased by 31％,38.6％ and 36％ in the R/B=4 ∶ 1,R/B=7 ∶ 1 and R/B=9 ∶ 1 treatments,respectively.LED interlighting insignificantly increased dry mass to fruit ratio compared with CK.Interlighting treatments also increased the maximum net photosynthetic rate and light absorption at the wavelength of 500-650 nm for the leaves close to the light source.[Conclusion] Interlighting treatments significantly increased tomato production,canopy light distribution and photosynthetic capacity without significant difference among treatments.
LED interlightingtomatophotosynthesisdry matter distributiongreenhouse
NETL
NSTL
万方数据
维普
