Effects of cut back at different leaf phenology stages on the growth of scion of rubber seedlings

Phenology can directly reflect the characteristics of rubber seedling, people determine agricultural time arrangements seedling germination, cut back, tending management and nursery operation. In this study, phenological period top leaf hevea tree seedlings was divided into four treatments, back carried out in sprout period, bronze stage, light green stage stable respectively. The effects sawing stock different periods on budding rate growth potential scion 1-2 were observed. results showed that significantly higher than those other stages when phenology sawed lowest stage. first whorl, plant height but there no significant difference with stage; stem diameter larger whorl distance paleobronze periods; number leaves more from stages. second height, diameter, stages, lowest. conclusion, rootstock is best, followed by Cut not recommended.