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对砂土、粘土中苹果幼树当年生根解剖构造的观察表明,砂土吸收根、生长根中柱占根面积百分比大于粘土;导管密度及导管占中柱面积百分比小于粘土;砂土输导根木质部占根面积百分比及导管总面积皆比粘土的小。
The observation on rooting anatomy of young apple trees in sand and clay in that year showed that the percentage of root area occupied by root and root in the soil was larger than that of clay. The density of catheter and the percentage of catheter in the center column were smaller than that of clay. The percentage of xylem root area and the total catheter area are smaller than clay.