乌柏富根苗及育苗密度研究

The study on the Rich Root seedling and seedling Density of sapium sebiferum

摘要:

对 1a 生乌柏苗木开展了 GGR6促根处理及苗木培育密度试验 。结果表明:GGR6处理能显著增加 1a 生苗木 I 级侧根的数量,形成乌柏富根苗;随着单位面积苗木株数的增加,苗木的苗高生长增加但地径生长减小 。根据试验结果并 结合生产实践,乌柏合适的育苗密度为 40株 ● m- 2 ; 因此,适宜的 GGR6处理浓度和适当的育苗密度是培育优质乌柏苗的 关键。

Abstract:

The GGR6 root-promoting treatment and seedling cultivation density experiment were carried out on the 1- year-old tree seedlings of sapium sebiferum . The results showed that : GGR6 treatment can significantly increase the number of grade I lateral roots of 1-year-old seedlings , forming T. tallow root-rich seedlings; with the increase of the number of seedlings per unit area, the seedling height growth of the seedlings increases but the ground diameter growth decreases and the seedling quality decreases . In combination with production practice , the suitable seedling density of Tal- low tree is 40 plants ● m—2 ; therefore , the appropriate GGR6 treatment concentration and the appropriate number of seedlings per unit area are the key to cultivating strong seedlings of Tallow tree with rich roots .