预防樟子松插穗干旱的方法

Preventive measures of cuttings drought for Pinus sylvestris var. mongolica

樟子松采穗最佳季节为母树休眠期和 7月 10日～ 7月 15日。在母树枝条上环割生根率可提高 30 % ;插穗切口采取“劈切” ,其生根率可提高 12 5 %。地温控制在 2 0～ 2 5℃ ;插壤水分管理标准是PF值 2 ,空气相对温度控制在 85 %以上 ,插床遮荫度控制在 70 %为宜。

Abstract: Research show that the best time of collecting cuttings Pinus sylvestr is var. mongolica are dormant period of seed trees and July 10~15,the rooting rate of ringed cuttings from the branches has increased by 30% and split by 12.5%.The ground temperature should be control at 20?~25? and managed water index of cutting bed at PF2,relative humidity over 85%,shade density at 70% could be as the optimal selection.