红松苗龄型对苗木质量和造林效果的影响  

Effect of Seedling Age on the Seedling Quality and Field Performance of Pinus koraiensis

作　　者：李国雷[1] 祝燕[1] 李庆梅[2] 刘勇[1] 邹尚庆[1] 黄有龙 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]中国林业科学研究院林业研究所,北京100091 [3]临江林业局森林调查设计大队,吉林134600

出　　处：《林业科学》2012年第1期35-41,共7页Scientia Silvae Sinicae

基　　金：中央高校基本科研业务费专项资金(JD2011-3;BLJD200905)

摘　　要：以春季播种、2年生红松苗(S2-0),春季播种、2年后移栽、再培育1年的3年生红松苗(S2-1),春季播种、2年后移栽、再培育2年的4年生红松苗(S2-2)、秋季播种、2年生红松苗(F2-0)为对象,研究不同苗龄间苗木质量和造林效果的差异。结果表明:与S2-0相比,S2-1苗高、地径、FOLR、单株生物量分别增加100%,108.2%,100%和398.4%,单株氮、磷、钾含量分别增加368.6%,646.2%和349.3%;S2-0造林成活率仅为67.5%,S2-1比S2-0造林成活率提高20.6%。S2-0移栽2年后,苗木质量提升幅度较移栽1年小;S2-2与S2-1造林成活率、地径生长量无显著差异。F2-0的苗高较S2-0大35.4%,造林成活率提高5.6%,秋季播种红松可促进苗木质量的提高。S2-2,S2-1,S2-0,F2-0的FOLR分别为18,14,7和7,FOLR与造林成活率、苗高、地径均显著相关,FOLR是评价红松苗木质量的简易、可靠指标。Pinus koraiensis is one of the most important native tree species in northeastern region of China. It is important to select optimum seedling age for transplantation in a given site condition according to both seedling quality and field performance. Four kinds of seedlings, such as S2-0, S2-1, S2-2, and F2-0, were used to test differences in seedling quality in Jiangmifeng Forest Country of Jinlin. In comparison with S2-0, height, root diameter, FOLR, and dry mass of S2-1 were increased by 100%, 108.2%, 100%, 398.4%, respectively. The N, P, and K contents were improved by 368.6%, 646.2%, 349.3%, respectively. S2-0 had only 67.5% of survival rate when being outplanted in one year, while the survival rate of S2-1 was improved by 20.6%, and therefore, it is necessary to transplant S2-0 seedlings in a nursery for further culture. When 2-0 seedlings were transplanted in the nursery for another 2-year culture （S2-2）, minor improvement of seedling quality was shown compared with the seedlings transplanted for another 1-year culture （S2-1）. No differences in survival and increment of root diameter were found between S2-2 and S2-0. Height in F2-0 when lifted and survival when outplanted in 1 year were improved by 35.4% and 5.6% in comparison to S2-0, respectively, indicating that sowing in the fall was able to increase seedling quality. FOLR of S2-2, S2-1, S2-0 and F2-0 were 18, 14, 7 and 7, respectively. And initial FOLR was correlated significantly with the survival, total height and root diameter of the seedlings when being outplanted for 1 year. Thus, FOLR could be one of the reliable, feasible indicators to predict field performance for Pinus koraiensis.

关 键 词：红松 苗龄 苗木质量 造林效果 

分 类 号：S723.13[农业科学—林木遗传育种]