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特性与适地黄瓜是瓜类中生长温度最低的作物,果实肥大。在高温多湿条件下生长弱,发生病害多。黄瓜的根是浅根性的,在干燥、湿害条件下发育弱,土壤肥沃生长良好,理化性质优良。黄瓜种子的发芽适温是25～30℃,在11℃以下不发芽,11～18℃是最低界限。生育适温是20～30℃,在10℃以下停止生育。因黄瓜的花是两性花,在发育途中分化为雄花和雌花。由于雌雄花的性比因品种而异,且容易受温度、日照长短等环境影响。在15℃开始开花,17℃左右开药。受精适温17～25℃,温度过高或过低,受精能力弱,采种量减少。土壤干燥抑制生长,特别干燥时停止生长,形成所谓“花打顶”。
Characteristics and Appropriate Cucumbers are cucumbers in the lowest growth temperature of the crop, fruit hypertrophy. Under the conditions of high temperature and humidity growth is weak, many diseases occur. Cucumber root is shallow, dry, wet conditions under the development of weak, fertile soil growth and good physical and chemical properties. Cucumber seed germination temperature is 25 ~ 30 ℃, below 11 ℃ germination, 11 ~ 18 ℃ is the lowest limit. Fertility suitable temperature is 20 ~ 30 ℃, below 10 ℃ birth stop. Because cucumber flowers are bisexual flowers, in the development of differentiation into male and female flowers. As the sex ratio of male and female flowers vary with species, and are susceptible to environmental effects such as temperature, sunshine duration. Flowering begins at 15 ° C and prescribes about 17 ° C. Fertilization temperature 17 ~ 25 ℃, the temperature is too high or too low, weak fertilization, mining seeds reduced. Dry soil growth inhibition, especially when dry to stop growing, the formation of the so-called “flower topping ”.