摘要
尾叶桉、湿地松１～６年生幼林施肥结果表明：１．尾叶桉在缺Ｐ的立地上，施Ｐ肥的效应极其显著。施Ｐ各处理在１～６年生时均显著或极显著地大于对照，其中以施ＮＰＫ全肥最好，６年生的树高、胸径和材积与对照比较，分别增长３５％，６９％，２４３％。而施ＮＫ肥的生长与对照差别不大。湿地松１～２年生的幼林施肥效果不大显著，３～６年生时才达显著差异，其中以施ＮＰＫ全肥的效果最好，６年生的树高、胸径和材积与对照比较仍分别增长１３％，１８％，５２％。２．尾叶桉、湿地松施Ｐ肥的各水平均达显著或极显著差异，施Ｎ、Ｋ肥的只在个别年度有差异。３．偏相关和复相关分析结果表明，尾叶桉施肥肥效主次顺序是Ｐ、Ｎ、Ｋ，湿地松是Ｐ、Ｋ、Ｎ。两树种均在５，６年生时，Ｎ、Ｐ、Ｋ的肥效最高。４．最优施肥配方：尾叶桉１～３年生以施Ｎ３Ｐ３为好，５～６年生以施Ｎ３Ｐ３Ｋ２为佳。湿地松１～２年生不用施肥，或薄施Ｎ肥；３～６年生以施Ｎ１Ｐ３Ｋ１较好。
The experiment of fertilization on Eucalyptus urophylla and slash pine had been carried out from the first year to sixth year trees. The results are as follows: 1. Phosphoric fertilizer had significant effect on E. urophylla on the phosphorus lacking site. The NPK treatment was the best, compared with CK treatment, the 6 year height, DBH and volume increased by 35%, 69% and 243% respectively. The NK treatment had no difference in comparison with CK treatment. There was no fertilization effect on the 1～2 years slash pine, but there was significant difference between treatments from 3～6 years old slash pine trees. The NPK treatment was the best, compared with CK treatment, the 6 year height, DBH,volume increased by 13%, 18% and 52% respectively. 2. There was difference or significant difference between P level application treatments, difference appeared in some individual year for the N,K treatments. 3. Partial correlation and multiple correlation analysis results showed that the order of fertilization effect was P,N,K for Eucalyptus urophylla and P,K,N for slash pine.N,P,K had the best effect on both the fifth and sixth year trees. 4. The optimum ration of fertilization was: N 3P 3 for 1～3 years and N 3P 3K 2 for 5～6 years old E. urophylla trees, no or light fertilization for 1～2 years old slash pine,N 1P 3K 1 for 3～6 years old slash pine trees.
出处
《广东林业科技》
1999年第1期16-25,共10页
Forestry Science and Technology of Guangdong Province
关键词
尾叶桉
湿地松
施肥效应
土壤养分
整地造林
Eucalyptus urophylla , slash pine, effect of fertilization, F test, Q test, Partial correlation and multiple correlation analysis
