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番茄、茄子、辣椒这三种作物在夏天供应期长,产量较高,因此种好这些作物具有一定的经济意义。三茄秧苗在定植前7～10天必须要进行低温锻炼,低温锻炼的关键是合理地控制好苗床内的温、光、气、热。(一)低温锻炼的好处三茄属喜温蔬菜,在一般情况下遇到5～10℃的温度就会遭受冷害,但经过低温锻炼的幼苗在短期内受到2～5℃的低温,则不会产生冻害现象。究其原因,三茄经过低温锻炼,可使叶表皮增厚,革质化,多蜡质。
The three crops of tomato, eggplant and peppers have a long supply period and high yield in the summer so it is of economic significance to plant these crops well. Three tomato seedlings 7 to 10 days before planting must be low-temperature exercise, the key to low-temperature exercise is to control the seedbed within a reasonable temperature, light, gas and heat. (A) the benefits of low temperature exercise Three tomato is warm vegetables, in general, encountered 5 ~ 10 ℃ temperature will suffer cold damage, but low temperature training of seedlings in the short term by 2 ~ 5 ℃ low temperature, then not Will have the phenomenon of frost damage. The reason, three cigars after low temperature exercise, leaf epidermis thickening, leathery, waxy.