日光温室硬肉番茄光能利用效能分析

本研究以日光温室内5个硬肉番茄品种为试材，对不同节位上叶片的叶绿素含量、叶绿素荧光参数、吸收光强进行测定，同时对当地主栽品种‘Harvest’番茄的群体光分布情况以及不同高度、不同区域的叶面积指数进行调查。结果表明：日光温室内部的空间垂直方向和水平方向上光分布不均匀，存在显著差异。番茄植株顶部的光照最强，自上向下依次递减，距地面0．1m处的光照最弱。且每行植株东侧的光强都高于西侧，宽行的光强都高于窄行。在窄行0．5m高的区域内，靠近温室后墙（9m处）的叶面积指教最大。不同番茄品种不同节位上的叶片光能利用效能存在显著差异，植株上住叶的叶绿素含量、最大光化学效率F／L值较高于下位叶，自上而下呈递减趋势。其中以色列1498和保罗塔的叶绿素含量较高；彤R值较大且较稳定；保罗塔对红光和蓝光的吸光系数相近．红利和以色列1498下位叶的ε蓝值较高。

Analyses the Efficiency of Solar Energy Utilization on Firm-Fleshed Tomato in Solar-Greenhouse

Chlorophyll content,fluorescence parameters and absorbed light intensity were measured on different stanza leaves of five firm- fleshed tomatoes in solar-greenhouse.Simultaneously the light distribution of population and leaf area index of different height and region was also investigated on Harvest.The results showed that light distribution was significantly inhomogeneous in vertical and level orienta- tion of solar-greenhouse.The light intensity was the strongest in top of tomato leaves,then it gradually ...