摘要
通过对3个不同坡位杉木第三代实生苗和洋020组培苗早期生长性状进行对比研究,结果表明:造林6a后,第三代实生苗和洋020组培苗均生长良好,试验林第三代实生苗总体平均树高、胸径、单株立木材积分别为8.5m、11.1cm、0.049 12m3,洋020组培苗总体平均树高、胸径、单株立木材积分别为8.7m、9.3cm、0.036 87m3。同坡位,第三代实生苗平均胸径要显著大于洋020组培苗,而组培苗整体平均树高要大于第三代实生苗(上坡位除外),材积方面,第三代实生苗的平均材积均显著大于洋020组培苗。另一方面,第三代实生苗和洋020组培苗在胸径、树高、材积的生长量随坡位从上到下:下坡位生长量>中坡位生长量>上坡位生长量。
Early growth traits of the 3^rdgeneration seedings and tissue culture seeding Yang-020 of Chinese fir in 3different positions of slop were studied.The results showed that the 3^rdgeneration seedings and tissue culture seedingYang-020 were all growing well after 6 years,the overall mean of tree height,diameter at breast height（DBH）andsingle tree volume for the 3^rdgeneration seedings of the test forest were 8.5m,11.1cm and 0.049 12 m3 absolutely,the overall mean of tree height,diameter at breast height（DBH）and single tree volume for tissue culture seedingYang-020 were 8.7m,9.3cm and 0.036 87m3 absolutely.The 3^rdgeneration seedings were larger than tissue cultureseeding Yang-020 for average DBH,smaller for tree height（except the uphill）and larger for tree volume with thesamp slope.On the other hand,the growth amount for diameter at breast height,tree height,volume growth in-creased with slope position from top to down of the third generation seedlings and tissue culture seeding Yang-020：downhill growth mesoslope growth upslope growth.
出处
《安徽农学通报》
2016年第11期90-93,共4页
Anhui Agricultural Science Bulletin
基金
福建省林木种苗科技攻关五期"杉木第四代育种研究与应用"项目
"十二五"农村领域国家科技计划课题研究任务"福建省杉木三代育种技术研究与示范"(2012BAD01B020106)
关键词
杉木
坡位
早期
生长性状
Chinese fir
Position of slop
Early stage
Growth trait
