| 廖承锐1，周哲名2，苏治南1，覃贵毕2，赵毅辉1，梁泰昌2，杨梅1.间伐与施肥对柳杉近熟林土壤养分
及林木生长的影响[J].广东农业科学,2014,41(12):59-62 |
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间伐与施肥对柳杉近熟林土壤养分
及林木生长的影响 |
| Effects of thinning and fertilization on soil nutrient andtree growth in near mature Cryptonmeria fortunei plantation |
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| DOI： |
| 中文关键词: 间伐 施肥 土壤养分 林木生长 柳杉 |
| 英文关键词: thinning fertilization soil nutrient forest growth Cryptonmeria fortunei |
| 基金项目:广西“十一五”林业科技项目（桂林科字[2009]第
23 号）；国家自然科学基金（31070560） |
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| 中文摘要: |
| 通过设置间伐施肥、间伐未施肥、未间伐未施肥3种处理，研究广西六万林场柳杉人工纯林间伐与施肥
措施对土壤养分及林木生长的影响，测定土壤N、P、K 有效性与林分平均树高、胸径。结果表明，在0~20 cm 土层中，
间伐施肥林地的速效钾含量与未间伐未施肥林地间差异显著，但有效磷和水解氮含量变化不明显；20~40 cm 土层
中，土壤养分含量变化不规律，差异均不显著。间伐施肥处理下的林分比其他两种处理条件下林分的林木树高及胸
径生长量要高，间伐施肥条件的林木胸径生长与未间伐未施肥林分间存在极显著差异。水解性氮与柳杉林木胸径生
长有显著相关性，上层土壤速效钾含量与上、下层土壤有效磷含量存在极显著相关性。间伐、施肥的同步实施可改善
林地养分环境，提高柳杉近熟林林分生长水平。 |
| 英文摘要: |
| The impacts of thinning and fertilization on soil nutrient and tree growth in near-mature plantation of Cryptonmeria fortunei were studied by setting up three treatments, including thinning plus fertilization, thinning without
fertilization and no-tending measures, respectively. The nutrition N, P, K in soil and the height and DBH of plantation were
investigated and analyzed. The results showed that at the 020 cm layer, the content of available K showed significant
differences between the treatments of thinning with fertilization and no-tending measures, while the contents of available P
and hydrolysable N didnt significantly change with different treatments. The content of soil nutrients changed irregularly
and not significantly at 20 40 cm layer. The growth increments of height and DBH in the thinned and fertilized plantation
were higher than those in the other treatments, particularly, the growth of DBH had very significant differences between the
thinned and fertilized stand and no-tending measures stand. The significant correlation was observed between the content
of hydrolysable N and the growth of DBH. In addition, the highly significant correlation exited between the content of
available K at upper layer and the content of available P at both layers. The thinning and fertilization improves the nutrient
environment and increases the growth level of near mature C. fortunei plantation simultaneously. |
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