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西红柿对温度的需求随每个生育期而不同,发芽期适温为28～30℃,低于10℃或高于40℃则不易发芽。开花期以15～30℃为宜,低于15℃或高于35℃,花器发育不良而影响结果。温度于18～26℃时果实着色最佳。当温度过低时,也会严重影响果实着色,如果棚室保温效果不好的话,棚温低于12℃时则不能正常着色。因温度达不到茄红素生成的要求迟迟不能转红的,可在采摘前进行药剂催红。药剂催红应注意:①催红不宜过早。一般在果实充分长大时催
Tomato temperature demand varies with each growth period, the optimum temperature during germination 28 ~ 30 ℃, less than 10 ℃ or higher than 40 ℃ is not easy to germinate. Flowering to 15 ~ 30 ℃ is appropriate, less than 15 ℃ or higher than 35 ℃, poor growth of flowers and affect the results. Fruit color is the best when the temperature is between 18 ~ 26 ℃. When the temperature is too low, it will seriously affect the fruit coloring, if the greenhouse insulation is not good, then the shed temperature below 12 ℃ can not be normal coloring. Due to the temperature does not reach the requirements of lycopene can not turn red, you can pick before the drug reminder red. Pharmacy reminding red should pay attention to: ① reminder red not too early. When the fruit is generally grown up