林地施肥对云南松人工林幼树期生长影响的试验

Effects of Fertilization on Growth Performance of Pinus yunnanensis Young Plantation

为了解林地施肥对云南松人工林幼树期林木地径和树高生长的影响,2008年在石屏县牛达林区乌拉田对当年营造的云南松人工林进行了林地施用不同量的复合肥、磷肥和钾肥处理组合的施肥试验。结果表明林地施肥具有促进云南松人工林幼树期林木地径和树高生长的效果。施肥1年后各施肥处理组合间云南松幼树的地径生长出现了极显著的差异(F=1.360<F0.01=2.662)。其最佳的施肥处理组合为每株施复合肥200 g+磷肥25 g+氮肥10 g,施肥1年后云南松幼树的平均地径和树高分别达2.50 cm和21.40 cm比不施肥的高0.82 cm、9.23cm。这一施肥处理组合可在生产实践中推广应用。

Experiments were conducted on Wulatian,Niuda forest farm of Shiping county in 2008,with the objective to study the effects of fertilization on basal diameter and height growth of Pinus yunnanensis trees in young plantation.The tested fertilizers include compound fertilizer,phosphate fertilizer and potassium fertilizer.The results showed that fertilization could improve the basal diameter and height growth of Pinus yunnanensis young trees.One year after fertilization,very significant differences were found among different treatments（F=1.360F0.01=2.662）.The optimum treatment was 200 g compound fertilizer ＋ 25 g phosphate fertilizer ＋ nitrogen fertilizer 10 g,the average value of basal diameter and height were 2.50 cm and 21.40 cm,which were 0.82 cm and 9.23 cm higher than the control.