表层根系  superficial roots

根系层土壤  rootzone; Root zone soil mixture; Rootzone mixtures

根系层土壤含水率  root layer soil moisture content

根系及冠层水导  root and shoot hydraulic conductivity

根系密集层  soil layer with concentrated root

地层层系  stratigraphic system

红层层系  red-bedding series

3级根系  third-class root

RF-Ⅱ椎弓根系统  RF-Ⅱ pedicle serew system

半单李代数的根系  root system of a semi-simple Lie algebra

鞭根系统分析  analysis on system of rhizome and root

不同苗龄的向日葵根系  sunflower root systems with different ages

部分根系施肥  Partial-roots fertilization

蚕豆根系  Faba-bean root

草本植物根系  Herb root system

草根层  Sod

草类根系  Herb roots

齿根根切极限  Limit of dedendum undercut

抽象根系  abstract root system