西伯利亚花楸不同配方施肥试验

Different Prescription Fertilization of Sorbus sibirica

对3年生西伯利亚花楸进行不同配方施肥试验,结果表明,不同氮、磷、钾肥料配比和施肥量对西伯利亚花楸生长和结实量有较大影响。氮、磷、钾不同比例施肥配方中,合理施肥能够加速树木生长,增加结实量,提高树种抗寒性。推荐使用氮(N)、磷(P2O5)、钾(K2O)施肥配比为2∶1∶1,施肥量80 g.株-1,年最佳施肥量为尿素174.75 kg.hm-2、磷酸二氢钾108.75 kg.hm-2、氯化钾83.25 kg.hm-2。

Different prescription fertilization experiments of 3-year-old Sorbus sibirica were conducted. Result shows that different amount ＆ fertilization of nitrogen, phosphorus ＆ potassium had obvious effects on growth ＆ yield of Sorbus sibirica. In different N, P ＆ K fertilizer formulations, rational fertilization can accelerate growth, improve yield ＆ enhance cold resistance of species . Therefore, the fertilization ratio of nitrogen （N）, phosphorus （P205） ＆ potassium fertilizer（K2O） is 2： 1： 1, fertilizer rate is 80 g per plant, the urea, potassium dihydrogen phosphate ＆ potassium chloride of the optimal fertilizer rate per year is 174.75,108.75 ＆ 83.25 kg·hm^-2 ,respectively.