毛红椿人工幼林配方施肥的初步研究

A preliminary study on formula fertilization effects to young plantation of Toona ciliata var.pubescen

根据毛红椿养分需求特性,结合试验地土壤养分诊断结果,于2009～2010年进行了幼龄毛红椿人工纯林配方施肥的试验研究。结果表明:配方施肥显著促进毛红椿的早期生长,幼林提早郁闭,苗木地径可作为毛红椿早期施肥效应的生长指示指标。添加镁肥对毛红椿苗木的增长效果极明显,1年生幼苗最佳施肥配方为(N35P35K3062.5 g+硫酸镁10 g)/株,造林地2年生幼林的最佳施肥配方(N35P35K30250 g+硫酸镁40 g)/株。

According to nutrient demand features of Toona ciliata var. pubescen and by combining with the soil nutrient diagnosis in the experimental field, the experiment of formula fertilization on the young plantation of Toona ciliata var. pubescen was conducted in 2009 - 2010. The results show that the formula fertilization significantly promoted T.ciliata early growth and young canopy closure early;the seedling diameters could be used as the early indicators of fertilization effects on the growth of its young plantation. The added magnesium fertilizer promoted seedlings growth extremely. The best fertilizer formula of 1-year-old seedlings was （N35P35K3062.5 g ＋ magnesium sulfate 10 g）/strain, while the best fertilizer formula of （N35P35K30250 g ＋ magnesium sulfate 40 g） / strain for 2 year-old plantation.