发育良好的根系是蔬菜壮苗的一个重要指标,而合适的苗期温度是形成良好根系的一个关键因素,早在二十年代,藤井键雄等人即报道过,在植物生长适温范围内,番茄根的生长速度随温度升高而加快,但长期栽培实践证明,高温条件培育的幼苗定植露地后生长恢复得慢,还苗后生长速度也远不及 Well-developed root system is an important indicator of strong seedlings of vegetables, and the appropriate seedling temperature is a key factor in the formation of a good root system, as early as the 1920s, Fujii Kaneo et al., Reported in the plant growth temperature range , The growth rate of tomato roots accelerated with increasing temperature, but long-term cultivation practice proved that seedlings grown in high temperature conditions grow slowly after planting, and the growth rate is also far behind