For the purpose of exploring the effective mode of fertigation in greenhouse, the experiment was conducted to analyze the effects of different irrigation threshold and fertilization on growth, physiological properties and yield of tomato. There were three irrigation threshold treatments including W1 (65% θF) , W2 (75% θF) and W3 (85% θF) , and three fertilization treatments including F1 (low) , F2 (middle) and F3 (high) . The results showed that the growth, yield and physiological properties of tomato could be modified by different irrigation threshold and fertilization. Under certain irrigation threshold, the plant height, leaf area, photosynthesis and transpiration rate, dry matter production and yield of tomato could be significandy increased along with the increase of fertilization amount, while excessive fertilization was detrimental to the growth, dry matter accumulation and yield improvement of tomato. Under certain fertilization amount, the plant height, leaf area and dry weight of tomato could be improved by rational increase of irrigation threshold, while excessive irrigation threshold was not conducive to the growth, photosynthetic rate and yield improvement of tomato. The treatment of W2F2 was most conducive to the growth, dry matter accumulation, yield and water use efficiency of tomato. The experiment also showed that, under different water and fertilization treatments, there was a significant linear correlation between the yield and dry matter weight as well as leaf net photosynthetic rate, and there was a significant quadratic parabola correlation between the leaf water use efficiency and net photosynthetic rate.%为探索有利于提高番茄生长和产量的温室滴灌施肥有效模式,试验设置了3个灌水下限[W1(65％θF)、W2(75％θF)和W3(85％θF)]和3个施肥水平[F1(低肥)、F2(中肥)和F3(高肥)],在设施栽培条件下研究了滴灌施肥不同灌水下限和施肥量对番茄植株生长、生理特性和产量的影响.结果表明:滴灌施肥条件下不同的灌水下限和施肥量对温室番茄生长、产量和生理特性都有一定的影响.在同一灌水下限条件下,增加施肥量可以显著提高番茄株高、叶面积、光合和蒸腾速率、干物质量和产量,但过高的施肥量反而不利于其生长、干物质累积和产量的提高；在同一施肥水平下,适当上调灌水下限可以显著增加番茄株高、叶面积和干物质量,过高的灌水下限不利于番茄的生长、光合速率和产量的提高.在试验的砂壤土中,W2F2处理最有利于番茄的生长、干物质的形成、产量和水分利用效率的提高.研究还表明,不同水肥处理条件下,番茄的产量与干物质量和叶片的净光合速率均呈显著的线性相关,番茄叶片的水分利用效率与净光合速率的变化关系均呈二次抛物线相关.
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