氮、磷、钾营养对直杆蓝桉幼苗生物量的效应研究  

Study on the Effect of Nitrogen,Phosphorus and Potassium on the Growth of Eucalyptus maideni F.Muel Seedlings

作　　者：严合章 陈录平 陈翠玲 杨水平[2] 

机构地区：[1]重庆市林木种苗站,重庆400020 [2]西南大学资源环境学院,重庆400716

出　　处：《西南大学学报（自然科学版）》2007年第4期74-77,共4页Journal of Southwest University(Natural Science Edition)

基　　金：国家林业局六大重点工程关键技术试验示范专项资助项目(2003-029-L29)

摘　　要：采用(311-A)最优混合设计,通过不同氮、磷、钾营养施肥配比对直杆蓝桉幼苗生长效应的试验研究,结果表明:氮、磷、钾不同配比对桉树幼苗生物量影响极显著;直杆蓝桉生物量与氮、磷、钾三元素用量较好拟合三元二次方程回归模型,通过回归分析结果得出氮、磷、钾的最佳用量分别为1 kg干基质(盆)0.222 g、0.177 g和0 g.A pot experiment with optimal regression design （311-A） was conducted to study the effects of nitrogen, phosphorus and potassium on the growth of Eucalyptus maideni F. Muel seedlings. The result indicated that the fertilizers of N, P and K had highly significant effects on the biomass of E. maideni seedlings. A fitted regression equation was established between the biomass of the plant and the fertilizer rates of N,P and K, and the optimum fertilizer application was deduced, which was 0. 222 g N ＋ 0. 177 g P2O5 and 0 K2O g per pot（lkg dry medium）.

关 键 词：直杆蓝桉 草炭 中性紫色土 

分 类 号：S792.38[农业科学—林木遗传育种]