不同光质补光对温室葡萄新梢生长的影响

为探讨不同光质补光对温室葡萄生长的影响,以2年生温室盆栽‘京秀’葡萄苗为试材,从展叶开始,每天早晚各补光2 h,以不补光为对照,观测比较红光、蓝光和紫外光(UVA和UVB)处理30 d后的葡萄新梢生长状况。结果表明,不同光质补光处理均促进新梢延长生长,缩短了新梢节间长度。其中,补充红光、蓝光明显增加新梢基部粗度;补充蓝光、紫外光减小了单叶面积;红光处理明显增加了新梢总的干物质积累,而且增大了叶片干物质分配比例。

Effects of Supplemental Lighting with Different Light Quality on the Shoot Growth of Grape Growing in Greenhouse

In order to study the effects of supplemental lighting with different light quality on the growth of greenhouse grape,2-year-old potted 'jinxiu' grape plants growing in a solar greenhouse were used to evaluate shoot growth dynamic after 30d supplemental lighting(4 h each day) with red,blue and ultraviolet(UVA and UVB) light,which started to work from leaf unfolding stage.The results showed that compared with control(i.e.no supplemental lighting treatment),all the lighting treatments improved the extension growth and deceased the inter-node length of grape shoots.Of these treatments,supplying red light and blue light increased significantly the diameter of shoot and supplying blue light and ultraviolet light deceased the leaf area.Moreover,red light improved the total dry matter accumlation in shoot and increased the percent of biomass partitioned to leaf within a shoot.