稀土元素在刺槐幼林上施用技术的研究

Studies on Application Technique of Rare Earth in the Young Forest Stand of Black Locust

应用0.02％浓度的稀土元素叶喷施肥法能促进刺槐的高生长和地径生长。平均高生长量增加16～22％,平均地径生长增加28％。叶绿素含量增加11％以上。稀土元素成本低,经济效益显著,操作简便,适于大面积推广。

Spraying rare earth solution of 0.02% concentration can promote growth of the black locust. Average height growth was increased by 16-22%. The basal diameter growth and the average basal diamether growth was increasef by over 28%. In 3-7days,chlorophyll content increased by more than 11%. With the advantage of low cost and obvious effects, it can be used in large scale of extention.