修枝和间伐对福建柏生长的影响

对16年生福建柏人工林开展修枝、修枝+间伐试验,2年后调查结果表明:修枝、间伐对福建柏树高生长有明显的促进作用;无论是修枝处理还是修枝+间伐处理,对福建柏胸径生长均未表现出明显的促进作用;修枝处理对于优化福建柏树体干形有着明显的作用,而间伐对树体干形的优化作用不大;修枝+间伐处理对单株材积有明显的促进作用,修枝处理的单株材积与对照差异不明显。修枝+间伐处理对不同坡位福建柏生长差异明显,树高、胸径、单株材积以中、下坡生长量大,上坡生长量小;树体干形中坡较上坡、下坡好。综合结果表明,福建柏选择中、下坡种植,采取修枝+间伐处理,对提高其产量及干形质量效果显著。

Effects of Stem Pruning and Intermediate Cuttings on the Growth of Fokienia hodginsii

The 16-year-old Fokienia hodginsii was carried out pruning and intermediate cuttings trials.The survey results after 2 years showed that:pruning and intermediate cuttings could significantly promote the growth of Fokienia hodginsii.Whether the tem pruning or stem pruning and intermediate cuttings treatment.The stem pruning could significantly optimize the stem form of Fokienia hodginsii,but intermediate cuttings was not very useful.The single tree stem volume of Fokienia hodginsii with stem pruning and intermediate cuttings was higher,but the difference was not obvious with stem pruning.After stem pruning and intermediate cuttings,the growth differences of different slope positions Fokienia hodginsii were significant.The tree height and diameter single tree volume of the uphill,mesoslope,and downhill Fokienia hodginsii were respectively higher than uphill.The results showed that stem forms of the mesoslope and downhill Fokienia hodginsii had significant effect with stem pruning and intermediate cuttings.