摘要
在云南省景谷县内,采用氮肥、磷肥、钾肥3种肥料对不同坡位的思茅松幼林开展配方施肥试验,结果表明：坡位影响思茅松幼林的生长,山中、山下的幼林比山顶的幼林生长量高,树高、胸径分别比山顶增加了21.5%~30.3%、30.5%~38.0%,均差异显著;较适宜的施肥方案为尿素250 g＋钙镁磷400 g＋硫酸钾100 g,施肥后思茅松幼林平均树高提高17%（约40 cm）,平均胸径提高30%（约1 cm）,差异均达显著水平,同时也提高了林地土壤速效磷107.6%、全磷57.9%和全钾6.8%,并有效减缓林地有机质、速效氮、全氮、速效钾等土壤养分的流失。仅采用氮、钾配比施肥或磷、钾配比施肥,树高和胸径提高较小。3种肥料中氮肥和磷肥对思茅松树高和胸径生长影响显著,钾肥影响较小。在培育思茅松人工幼林时,采用氮、磷配比施肥对其树高和胸径生长具有促进作用。
In order to investigate the fertilization scheme for promoting the growth of Simao pine saplings. A formula fertilization experiment including 3 kinds of fertilizer of nitrogen fertilizer,phosphate fertilizer and potash fertilizer was carried out along the contour from the peak to the bottom with 3 replications. Tree height and DBH were investigated for 3 years after fertilization. The results have showed that： slope positions affect the growth of Simao pine saplings,the saplings in the midslope and downslope grow better than that of upsl1 ope,their tree height and DBH were increased by 21. 5% ~ 30. 3% and 30. 5% ~ 38. 0%,they are statistical significant difference; the suitable fertilization scheme is sulfate 250 g urea ＋ 400 g calcium magnesium phosphate fertilizer ＋ 100 g potassium,tree height was increased by 17%（ about 40 cm） after fertilization,the average DBH increased 30%（ about 1 cm）,the differences are significant level,and Available phosphorous,total phosphorous and total potassium in forest land. soil were increased 107. 6%,57. 9% and 6. 8%. Only applied the formula fertilization of nitrogen and potassium fertilizer or potassium and phosphorus fertilizer,the tree height and DBH of Simao Pine was increased smaller. Nitrogen and phosphorus fertilizer influence significantly on tree height and DBH of Simao pine,potassium fertilizer has smaller effect. For the cultivation of Simao pine sapling,the formula fertilization of nitrogen,phosphorus fertilization can promote the growth of tree height and DBH.
出处
《福建林业科技》
2015年第4期105-111,共7页
Journal of Fujian Forestry Science and Technology
基金
国家林业局林业公益性行业科研专项(高产脂思茅松良种选育及功能基因克隆与鉴定
201304105)
关键词
思茅松
坡位
氮、磷、钾配方施肥
Pinus kesiya var
langbianensis
slope positions
formula fertilization of nitrogen
phosphorus
potassium
