不同肥料及施肥量对降香黄檀生长的影响

Effects of Different Fertilizers and Application Rates on the Growth of Dalbergia odorifera

降香黄檀是国家二级保护植物,具有较高的经济价值,近年来因过度砍伐,天然资源日益枯竭。因此,发展人工培育种植降香黄檀是保护该树种和增加市场供给的重要手段。开展不同肥料对降香黄檀苗木株高和胸径的影响研究。结果表明,不同的肥料类型和施用量对降香黄檀苗木的株高和胸径增量都有显著的影响,通过对施用有机肥、复合肥和对照处理下的株高增量和胸径增量比较,发现施用有机肥的效果要好于复合肥和对照处理。通过不同施肥量下株高增量和胸径增量的对比,发现每3个月施用有机肥200g的条件下,降香黄檀苗木的株高和胸径增量较大,分别为270.7±13.5cm和49.2±2.5mm。

Dalbergia odorifera is a second-class national protected plant with high economic value.In recent years,due to excessive felling,natural resources are increasingly exhausted.Therefore,the development of artificial cultivation and planting of Dalbergia odorifera is an important means to protect the tree species and increase market supply.The effects of different fertilizers on plant height and DBH of Dalbergia odorifera seedlings were studied.The results showed that different fertilizer types and application rates had significant effects on plant height and DBH increment of Dalbergia odorifera seedlings.Through the comparison of plant height increment and DBH increment under organic fertilizer,compound fertilizer and control treatment,it was found that the effect of organic fertilizer was better than that of compound fertilizer and control treatment.Through the comparison of plant height increment and DBH increment under different fertilizer application rates,it was found that when 200 g organic fertilizer was applied every three months,the plant height and DBH increment of Dalbergia odorifera seedlings were 270.7±13.5 cm and 49.2±2.5 mm,respectively.