苗木根系药剂处理对其造林成活率及生长的影响

选择适宜的造林树种,采取有效的配套技术是山区造林的关键。通过采取不同苗木处理方法进行浅山区造林试验,结果表明:营造青海云杉,应用绿色植物生长调节剂GGR8号25mg?kg~(-1)浸根12h处理苗木平均成活率达86.25%以上,与对照相比,效果明显;营造华北落叶松,应用GGR8号处理、应用科翰高效树脂保水剂蘸根法栽植成活率较对照有显著提高。在石砾河滩立地条件差的情况下,处理成活率较对照有明显提高,生长情况优于对照。绿色植物生长调节剂GGR8号对苗木后期生长有促进功能。

Effects of Different Medicament Treatment Methods on Survival Rate and Growth of Seedlings

Selecting optimal species and adopting effective supporting technology are the key to the success of moun-tainous forestation.Afforestation experiments were conducted in shallow area by different treatments.Result shows that planting Piceacrassifolia by applying 25 mg kg-1 GGR8 Plant Growth Regulator dipped with 12 h,the aver-age survival rate of seedlings are more than 86.25%,the effect is remarkable compared with the control.The sur-vival rate of Larix principis-rupprechtii is very significant than the control by applying treatment A,treatment B (Kehan efficient resin water-keep agent+dipping method for planting).In the conditions of poor site of gravel river-bank,the effect of survival rate is significant by applying treatment A and treatment B than that of the control.The growth condition is superior than that of the control.Plant Growth Regulator (No.GGR8)have promoting function for growth of seedlings later.