不同LED补光时间对日光温室番茄生长发育及光合特性的影响

【目的】分析LED补光时长对番茄生长发育及光合特性影响,研究新疆地区越冬季节日光温室番茄最佳补光时长。【方法】以番茄品种天粉1号材料,以日光温室保温被揭盖时间为基准,比较不同补光时间处理番茄生长发育、光合特性、果实品质和产量等指标。【结果】保温被盖后/揭前补光2 h/4 h、4 h/2 h、6 h/0 h、4 h/0 h有利于番茄株高和茎粗(4 h/2 h)生长;保温被盖后/揭前补光4 h/2 h、6 h/0 h处理叶片光合特性明显增强,番茄果实产量显著高于对照;番茄果实果实VC和番茄红素含量以盖后/揭前6 h/0 h和4 h/0 h为最佳。【结论】综合番茄生长、植株干鲜重、光合特性、果实品质和产量等因素,保温被盖后/揭前补光4～6 h为新疆乌鲁木齐周边地区日光温室越冬茬番茄适宜的补光时长。

Effects of Different LED Light Supplementation on Growth,Development and Photosynthetic Characteristics of Tomato in Solar Greenhouses

【Objective】 By analyzing the effects of LED light supplementation on the growth and photosynthetic characteristics of tomato, the optimal LED light supplementation time of tomatoes in the winter season in Xinjiang was clarified. 【Method】Taking tomato as the research material, based on the time of exposure of solar greenhouse insulation, the growth, photosynthetic characteristics, fruit quality and yield of tomato were compared with different LED light supplementation time. 【Result】After the heat was covered, the fact that the light was supplemented 2 h/4 h, 4 h/2 h, 6 h/0 h, 4 h/0 h was beneficial to the plant height and stem diameter (4 h/2 h) growth; after the heat was covered, the photosynthetic characteristics of the leaves treated with 4 h/2 h and 6h/0h were significantly enhanced. The yield of tomato fruit was significantly higher than that of the control. The content of VC and lycopene in tomato fruit was the best after 6 h/0 h and 4 h/0 h. 【Conclusion】 Comphrehensively considering the factors such as the growth of the tomato, the dry weight of the plant, the photosynthetic characteristics, the quality and the yield of the fruit, etc. the heat retention and the light supplementation for 4-6 h were suitable in the winter greenhouses in the surrounding area of Urumqi, Xinjiang.