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该文旨在比较研究不同栽培基质 (土壤、泥炭、泥炭 /珍珠岩 (1/ 2 )、珍珠岩和营养液循环系统 )中生长的樱桃番茄在夏季受热应激时的反应。试验于 2 0 0 2年 7、8、9月进行 ,番茄分别移植到 3个温室中 ,温度设置为 :2 5 / 2 0℃ ,35 / 2 5℃ ,>35 />2 5℃ ,分别在番茄不同生长阶段进行。测试分析了温室内环境因子的变化和气体交互作用 :温室内温度与湿度 (R2 :0 .894～ 0 .972 )、温度与 CO2 浓度 (R2 :0 .6 6 8～ 0 .786 )之间呈线性关系。测定了番茄的生长率 ,表明茎伸展与栽培基质密切相关。用叶水势来反映受热应激下番茄的水分状况 ,表明方差分析显示无论是黎明前还是正午 ,栽培基质和热应激对叶水势的变化有重要的作用。实验结果可正确确定热胁迫影响的生育时期 ,并为选择夏季番茄生产的适宜栽培基质提供依据。
The aim of this study was to compare the responses of cherry tomatoes grown under different cultivation matrices (soil, peat, peat / perlite (1/2), perlite and nutrient circulatory system) during summer heat stress. The experiment was carried out in July, August and September in 2002. The tomato plants were transplanted into three greenhouses respectively. The temperature was set at 25/20 ℃, 35/250 ℃ and> 35 /> 25 ℃ respectively In different stages of tomato growth. The changes of environmental factors and gas interactions in the greenhouse were tested and analyzed: temperature and humidity in the greenhouse (R2: 0.894-0.972), temperature and CO2 concentration (R2: 0.668-0.786) A linear relationship. The growth rate of tomato was measured, indicating that stem elongation was closely related to the culture medium. Leaf water potential was used to reflect the water status of tomato under heat stress, which indicated that the analysis of variance showed that the culture substrate and heat stress played an important role in leaf water potential change before or at dawn. The results of the experiment can correctly determine the growth period affected by heat stress and provide the basis for selecting appropriate cultivation substrates for summer tomato production.