红松苗龄型对其造林生长量和成活率的影响

通过选用不同苗龄型红松幼苗进行造林试验,以研究红松不同苗龄型对其生长和造林成活率的影响。结果表明:以2年生播种苗(2+0)为对照,则移床苗不同苗龄组(2+1,2+2)之间生长量和侧根数有显著的差异,不同苗龄造林的成活率和苗木生长量及侧根数也有显著的差异。以苗龄2+0为对照,试验处理2+1的造林成活率、苗高、地径分别比对照提高43.96%、78.29%和37.79%;试验处理2+2提高造林成活48.79%,苗高提高147.43%,地径提高116.39%。以2+2和2+1试验处理造林成活率较高。

Effect of Pinus koraiensis Seedling Age on Mass Growth and Forestation Survival Rate

This paper studied the effect of Pinus koraiensis seedling age on mass growth and forestation survival rate.The results show that using 2 years old seedling as control (2 + 0),the mass growth and lateral root number between shift bed seedlings age 2 + 1 group and 2 + 2 group have significant differences.And the survival rate, mass growth as well as lateral root number from different seedling forestation groups represent obvious differences. In forestation,compared with control 2 + 0,experimental treatment 2 + 1 increases the survival rate,seedling height,seedling ground diameter by 43.96%,78.29% and 37.79% respectively.Correspondingly,experimental treatment 2+2 increases forestation survival rate with 48.79%,seedling height 147.43%,seedling ground diame-ter 1 1 6.39%.Both of experimental treatments 2+2 and 2+1 have higher forestation survival rate.