山杨根蘖的更新技术

Technique of root shoots regeneration of moutain poplar

山杨根蘖苗稳定期指标是苗高 2m ,胸径 1cm以上 .根蘖苗最佳移植期为春季 ,其成活率96% 根蘖更新比人工更新降低成本 378元 /hm2 ,食叶害虫被害率降低 32 67%,根蘖苗比人工培育苗苗高生长量提高 65 2 6%,地径生长量提高 64.62 %.

The index of root shoots seedlings in stationary phase is height 2 m,chest diameter 1 cm.The best transplanting stage is spring,it's sutvival ratio is 96%·Regeneration of root shoots reduced cost 378 yuan per hectare than artificial regeneration.Injury percentage of defoliator reduced 32.67%,seedling height raised 65.26%,ground diameter raised 64.62%.