一、用途本方法主要用于对高粱品种的抗旱性筛选和鉴定。首先能将抗旱品种和不抗旱品种区分开来,进一步可将品种的抗旱性程度进行定量评价。二、原理据生态学原理,生物在不同的生态环境中,往往会形成与该环境条件相适应的生态型。任何生物,对其不利的环境条件都要产生一定的反应。植物在水分不足的环境下,会调整自己的地上与地下器管的协调关系,让自己所得到的营养物质优先满足根系的生长 First, use This method is mainly used for sorghum drought resistance screening and identification. First of all, drought-resistant varieties can be distinguished from non-drought-resistant varieties, and the degree of drought resistance of the varieties can be further quantitatively evaluated. Second, the principle According to ecological principles, organisms in different ecological environment, tend to form with the environmental conditions compatible with the ecological type. Any living creature must react to its unfavorable environmental conditions. Plants in low water environment, will adjust their coordination between the ground and the underground pipe, so that their nutrients will give priority to meet the root growth