不同叶背补光模式对戈壁温室番茄品质的影响

【目的】研究南疆戈壁日光温室内不同叶背补光模式对番茄果实品质的影响,以获得适合该地区设施番茄生产的经济最适补光模式。【方法】 以NS3389番茄作为材料,LED为补光光源,于08:00~22:00期间内,以无补光处理为空白对照(CK),并设置3种叶背补光模式:T₁,100 μmol/(m²·s)持续补光;T₂,揭帘之前与盖帘之后200 μmol/(m²·s)间歇补光;T₃,揭帘后室内光强低于150 μmol/(m²·s)时按照100 μmol/(m²·s)自动补光。【结果】 T₂和T₃下番茄果实的可溶性固形物含量、总酸含量以及糖酸比均高于其他处理;T₂处理下番茄果实中可溶性蛋白、抗坏血酸(VC)、番茄红素和挥发性物质含量最高。【结论】 揭帘前后的适度高光强补光模式(T₂处理)较适合南疆地区戈壁温室高品质番茄生产。

Effects of Different Abaxial Leaf Supplemental Lightning Modes on Fruit Quality of Tomato Produced in Gobi Greenhouses

【Objective】 To explore the effect of different abaxial leaf supplemental lighting modes on tomato fruit quality in Gobi solar greenhouse in southern Xinjiang in the hope of obtaining the economically optimal supplemental lightning mode which might be suitable for facility tomato production in this region.【Method】 NS3389 tomato was used as the test material, and LED was used as the supplement light source. During 08: 00-22: 00 Beijing time, no supplement treatment was used as a blank control (CK). We settled three supplemental lightning modes: T₁, continuous supplemental lightning with photosynthetic photon fluxion density (PPDF) of 100 μmol/(m²·s); T₂, intermittent supplemental lightning before curtain opening and after curtain closing with PPFD of 200 μmol/(m²·s); T₃, automatically supplemental lightning with PPFD of 100 μmol/(m²·s)When indoor PPFD below 150 μmol/(m²·s).【Result】 The soluble solid content, total acid content, and sugar-acid ratio of tomato fruits under T₂ and T₃ were higher than those of other treatments; the soluble protein, ascorbic acid (VC), lycopene, and volatile matter contents of tomato fruits under T₂ treatment were the highest.【Conclusion】 Based on the results of previous economic studies, a moderate high PPFD supplemental lightening mode (T₂ treatment) before curtain opening and after curtain closing is more suitable for high-quality tomato production in Gobi greenhouses in southern Xinjiang.