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一、引言番茄是一种喜温暖的蔬菜植物。最适宜于生長及發育的温度为20—24℃。但是,它对于夜間温度的适应范圍要比白天的來得嚴格。据(1953)及Went and Cosper(1945)等曾經指出,如果夜間温度高于22℃,或低于15℃,就会引起落花。正因这个緣故,所以我們在長江流域适宜于番茄的栽培季節,都集中在春末夏初。清明以前,气温过低,易受凍害。但是到了7月下旬以后,气温过高,尤其是夜間的温度过高,又容易引起落花,因而番茄的生產又少。到了10月以后,才又容易結实。因此在廣州等地,
First, the introduction of tomato is a hi warm vegetable plants. The most suitable temperature for growth and development of 20-24 ℃. However, its adaptation to nighttime temperatures is more stringent than during the day. According to (1953) and Went and Cosper (1945) and others have pointed out that if the night temperature is higher than 22 ℃, or below 15 ℃, it will cause falling. Because of this reason, so we are suitable for the cultivation of tomato in the Yangtze River Basin, are concentrated in late spring and early summer. Ching Ming, the temperature is too low, vulnerable to frost damage. However, by the end of July, the production of tomatoes is very low due to over-temperature, especially at night, when the temperature is too high and the fall easily occurs. In October, it is easy to be strong again. Therefore, in Guangzhou and other places,