摘要
对福建柏施肥配方及造林密度试验的结果表明,福建柏对肥料反应相当敏感,施肥后肥效持续时间较长。在本试验立地条件(缺磷)下,福建柏施肥应以施磷为主,配合氮肥效果更佳。最好配方是单株施尿素100g、钙镁磷肥200g、氯化钾50g,树高增益达44.6%,胸径增益达42.3%,单株材积增加182.99%,肥效指数高达2.93;其次是单株施尿素50g、钙镁磷肥200g。两种配方的施肥增益分别达64 631元/hm2和57 300元/hm2,与施肥指数一致。经综合分析认为,福建柏幼林期造林密度行株距以2.0m×1.5m为宜。
The experiment of fertilizer and afforestation density of young plantation Fokienia hodginsii was carded in 1998. The results showed that Fokienia hodginsii was sensitive to fertilizer and the fertilizer effect sustained for a long time. Phosphate fertilizer should be mainly applied for Fokienia hodginsii and the ideal fertilizer amount is 200g/tree of calcium magnesium phosphate fertilizer and the fertilizer effect would be better in combination with N fertilizer. The fertilizer formulation of urea 100g, calcium magnesium phosphate fertilizer 200g and potassium chloride 50g for each tree brought an increase of 44.6% in height growth, 42.3% in diameter, 182.99% in volume of timber, and the index of fertilizer effect reached 2.93 and the economic results reached 64 631 yuan/hm^2. The treatment of urea 50g/tree and Ca. Mg and P 200 g/tree gained the economic effects of 57300 yuan/hm^2. The results also indicated that the best afforestation density was 2.0m×1.5m in spacing to the Fokienia hodginsii young plantation.
出处
《亚热带植物科学》
2007年第1期20-23,26,共5页
Subtropical Plant Science
基金
国家"九五"(96-011-03-03-02)
"十五"(2002BA515B0104)林业科技攻关项目
关键词
福建柏
施肥配方
造林密度
Fokienia hodginsii
fertilizer
afforestation density
