不同水分处理对番茄产量性状及其生理机制的效应

在分析不同处理土壤水分动态的基础上，探讨了不同水分处理对番茄植株营养生长、生殖生长及其生理机制的效应，分析了不同土壤水分状况下番茄的水分利用效率的差异。试验表明：（1）日光温室滴灌条件下深墒较稳层的土壤水分含量在整个生育期有下降趋势，胁迫处理更为明显，土壤含水率变幅为13%~21%；（2）土壤水分对营养生长为正效应，而对生殖生长影响不明显；（3）胁迫处理叶片的细胞液浓度高于高水分处理，而叶片气孔导度低于高水分处理；（4）番茄座果后保持土壤水分不低于田间持水量的70%，较适合番茄生长。

A Effects of Different Soil Water Treatment on Tomato Yield Components and Physiological Mechanism

On the basis of analyzed the variation of soil water content in different treatments, the effect of water treatment on vegetative, reproductive growth, physiological mechanism was discussed respectively. Meanwhile, the difference of water use efficiency from different water treatments was analyzed. The main conclusion includes four aspects. Firstly, the soil water content from 60cm to 100cm was reducing in whole growth period, which is more obvious in water stress treatment, namely the variation of soil water content is 13%~21%; Secondly, the effect of soil water on vegetative growth is positive, but the effect of soil water on reproductive growth is not obvious; Thirdly, the cellular liquid concentration in water stress treatment is higher than that in high water treatment, but the stomatal conductance in water stress treatment is lower than that in high water treatment; The last, if the soil water content was not lower than 70% after reproduced, it was adapt to tomato.