The results shows that contracted taproot and developed lateral root of alfalfa adapted soil moisture changes on eluviated cinnamon soil which is great depth and drains well.

• 结果表明:在土层深厚、排水良好的淋溶褐土上,紫花苜蓿主根收缩,侧根发达,适应土壤上下层水分的变化。