大温差育苗,也叫夜冷育苗,是当前培育黄瓜苗的一项新技术。常规育苗昼夜温差在15℃左右,而大温差育苗温差在20～25℃,白天适当高温有利光合作用,制造更多的养分,夜间低温能减少养分消耗,增加营养物质的积累,促进花芽分化,给黄瓜早熟、高产打好基础。大温差育苗的黄瓜,苗龄45～50天就可具备壮苗标准:株高15～20厘米,6～8片真叶,子叶和真叶肥厚舒展,色深而有光泽,节间 Large temperature difference nursery, also known as night cold nursery, is currently cultivating cucumber seedlings a new technology. Conventional nursery temperature difference between day and night is about 15 ℃, while the temperature difference between nursery temperature of 20 ~ 25 ℃, suitable for high temperature during the day favorable photosynthesis to create more nutrients, low temperature at night can reduce nutrient consumption, increase nutrient accumulation, Premature cucumber, high-yield lay the foundation. Large temperature difference nursery cucumber, 45 to 50 days old seedlings can have strong seedling standards: plant height 15 to 20 cm, 6 to 8 true leaves, cotyledons and true leaves hypertrophy stretch, deep and shiny color, internode