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以红颜草莓为试材,通过地热线加热控制使日光温室草莓生长期的夜间根际温度分别为13、16、19、22℃,以不经过加热处理为对照,测定不同温度下草莓的营养生长、产量和果实品质等指标。结果表明:适当提高夜间根际温度有利于草莓的营养生长,4个加温处理草莓的株高、冠幅、叶面积、叶柄长、根颈粗、主根数、根冠比等营养生长指标均高于对照;根际温度的升高提高了草莓的单株果数和产量,13、16、19℃3个处理的草莓产量比对照分别提高1.91%、41.05%和8.33%,但22℃处理的产量比对照下降14.64%;除22℃处理以外,其他3个加温处理草莓的优质果率均高于对照,但4个加温处理草莓的可溶性固形物含量、可滴定酸含量和硬度与对照相比没有显著差异。综合草莓生长结果各项指标可以得出,16℃为最适加温温度。
Strawberry was used as test material to control the rhizosphere temperature of strawberries growing in sunlight greenhouse at night by rhizosphere temperature of 13, 16, 19 and 22 ℃ by heating control of geothermal field, respectively. With no heat treatment as control, the vegetative growth of strawberry under different temperature , Yield and fruit quality and other indicators. The results showed that proper raising of nighttime rhizosphere temperature was beneficial to the vegetative growth of strawberry. The vegetative growth indices of strawberry height, crown width, leaf area, petiole length, root girth, main root number, root / shoot ratio Higher than the control; increased rhizosphere temperature increased strawberry fruit number per plant and yield, strawberry yield at 13,16,19 ℃ 3 treatments increased 1.91%, 41.05% and 8.33% respectively, but at 22 ℃ The yield of strawberry was 14.64% lower than that of the control; except the 22 ℃ treatment, the fruit quality of the other three strawberries were higher than the control, but the soluble solids content, titratable acid content and hardness of the four strawberries There was no significant difference between controls. Comprehensive strawberry growth results of the indicators can be drawn, 16 ℃ for the optimum temperature.