【摘要】 以杜仲幼树和氮、磷二因素肥料为材料 ,采用盆栽和田间试验相结合的研究方法 ,研制出了杜仲专用肥。结果表明 ,磷是影响杜仲生长的主要因子 ,并获得了杜仲专用肥中氮、磷、钾经济配比为 1∶ 1 .2 5∶ 0 .4;杜仲专用肥的施用具有明显的经济、生态效益。据测定施用专用肥比不施肥对照每公顷林地年净增 7996.5元。更多还原

【Abstract】 Potted plant tests and field test of N?P of Eucommia ulmoides were done, special fertilizer of Eucommia ulmoides was manufactured. The results showed that P was one kind of main factors affecting growth, a economic prescription(N∶P 2O 5∶K 2O=1∶1.25∶0.4) was obtained; the special fertilizer had obvious enconomic, ecological benefits. It increased 7996.5 yuan per hectare than the control devotion.更多还原