Both RHD and RHLUR (but not ARHL) were positively correlated with P concentration in the plant, suggesting an important role of root hairs in P status.

• 另外，在基根上根毛密度和单位根长上的根毛总长(但不是平均根毛长度)都与植株内P浓度显著正相关，表明了根毛密度对维持植物体内P状况起了一定作用。