不同肥料等养分量施肥对桉树生长的影响

闽南山地尾叶桉、巨桉施用等养分量不同肥料品种试验研究结果表明 ,在有效养分量相等的情况下 ,施用不同氮肥、磷肥品种对桉树生长、生物量积累及养分利用率的影响较大。磷肥选用钙镁磷肥作基肥 ,氮肥以尿素作追肥并多次施用 ,有利于促进林木对营养元素的吸收积累、提高营养元素的利用效率、协调桉树人工林生态系统中营养元素的吸收平衡 ,从而促进林木的生长 ,提高林分生产力 ,经济效益显著。说明在闽南山地 ,利用以上施肥方式是培育桉树速生丰产林较为理想的施肥方式 ,值得推广应用

STUDIES ON THE EXPERIMENT OF APPLYING VARIOUS FERTILIZER VARIETIES OF THE SAME NUTRIENT CONTENT ON Eucalyptus

The result of the study indicates that the effects of applying N and P various on the growth ,the biomass accumulation and the utilization rate of the nutrient of Eucalyptus are big under the condition of the same available nutrient content.The base fertilizers of P are calcium magnesium phosphate fertilizer,and the carbamide of N is applied as the additional fertilizer time after time, which will promote the assimilation and accumulation of the nutritional elements of the forest tree as well as increase the utilization rate of the nutritional elements,and harmony assimilation-balance of nutritional elements of ecosystem and therefor will promote the tree growth and raise the stand productivity, meanwhile the economic benefit is significant. Cultivating fast-growth and fertility of Eucalyptus forests in the Southern Fujian mountain areas,the Ca-Ma-P fertilizer is applied as the base fertilizer with the additionnal fertilizer of urea time after time,which is an ideal fertilization mode and it is worth being popularized and applied.