The diurnal variations of their Pn and Tr were significantly different, and the Pn and Tr of spring tomato were significantly higher than those of winter tomato under the same soil water content.

• 春番茄与冬番茄的Pn及Tr日变化规律显著不同；且在相同土壤水分条件下；春番茄Pn及Tr显著高于冬番茄.