中国农业科学（英文版）2002，Vol.1Issue(4)：438-443,6.
The Induction of Root Formation by Urea, IBA and Sheep Dung in Young Apple Tree
The Induction of Root Formation by Urea, IBA and Sheep Dung in Young Apple Tree
摘要
Abstract
The effect of plant growth substance and fertilizer on root formation was studied in a newly planted apple tree (Malus pumila Mill / Malus hupenensis Rhed). The results indicated that urea and IBA (indole butyric acid) and sheep dung all increased the total number and activity of new roots and changed the ratio of absorbing root to extensive roots obviously. Urea increased the number of extensive root and decreased the ratio of the root to shoot mostly. IBA lengthened the extensive root and increased the ratio of root to shoot obviously. Sheep dung increased the nu mber of absorbing root and increased the ratio of absorbing root to ex-tensive root, divided new root into many branches, increased the fresh weight of the root and thickened the extensive root. The fresh weight of root increased and the ratio of root to shoot declined after urea was added to sheep dung. Both the ratio of absorbing root to extensive root and root fresh weight was increased after IBA was added to sheep dung, then the ratio of root to shoot had no change obviously.关键词
Urea/IBA/Sheep dung/Apple/RootsKey words
Urea/IBA/Sheep dung/Apple/Roots引用本文复制引用
YANG Hong-qiang,JIE Yu-ling,HUANG Tian-dong,SHU Huai-rui..The Induction of Root Formation by Urea, IBA and Sheep Dung in Young Apple Tree[J].中国农业科学（英文版）,2002,1(4):438-443,6.基金项目
This project was supported by the National Natura Science Foundation of China(No. 39600102,30170655). （No. 39600102,30170655）
