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研究结果表明，早熟番茄苗期同一片真叶上不同部位侧生裂片的光合、蒸腾速率不同，其大小依次为中部＞顶部＞基部，叶温和气孔阻力正好相反。４个早熟品种净光合速率表现为秦粉２号＞西粉３号＞秦粉５号＞早丰，蒸腾速率为早丰＞秦粉２号＞秦粉５号＞西粉３号。秦粉２号、西粉３号两品种光合速率及蒸腾速率日变化为单峰型，无午休现象，其日变化趋势与有效光强变化趋势平行或一致。
The results showed that the photosynthesis and transpiration rate of the lateral lobes of different parts of the same true leaf in early mature tomato seedlings were different in order of middle> top> base, and the opposite of leaf temperature and stomatal resistance. The net photosynthetic rate of four precocious cultivars was Qinfen 2> Xifen 3> Qinfen 5> Fengfeng, with the transpiration rate of Fengfeng> Qinfen 2> Qinfen 5> Xifen 3. The diurnal changes of photosynthetic rate and transpiration rate of Qinfen 2 and Xifen 3 were unimodal, with no break at rest. Their diurnal variation trend was in parallel with or consistent with the trend of effective light intensity.