【摘要】 应用正交设计法探讨了配方施肥对黄金梨树体和一年生枝中N、P、K含量和枝条植物学特征与组成的影响。结果表明,配方施肥显著提高了树体中N与P的含量,使一年生营养枝的长度和粗度、结果枝的粗度及其占一年生枝的比例显著增加。最优配方为每株11月中旬施腐熟猪粪20kg、过磷酸钙0.5～0.75kg作基肥,花前(3月中旬)和果实膨大期(6月上旬)两次土壤追施尿素1.0～1.5kg和果实膨大期同时施入氯化钾1.5kg。更多还原

【Abstract】 The experiment of prescription fertilization on Pyrus pyrifolia ‘Whangkeumbae’ was carried out by orthogonal array method.The effects of prescription fertilization on the N,P,K content and branch character and constituent of tree bodies and the one-year-old sticks was found. The results showed that comparison with general fertilization,the N and P contents of tree bodies were significantly enhanced by prescription fertilization,which made the length and thickness of one-year-old nutrition sticks and the thickness of fruiting branches increased,and the proportion of fruiting branch in one-year-old sticks was also increased . The optimal formulation is 20 kg pig manure and 0.5～0.75 kg ssp for base fertilizer per plant in mid-November before anthesis date (in mid-March) and fruit expanding period (in early June) .Meanwhile,1.0~1.5 kg Urea should be applied twice and during fruit expanding period,the 1.5 kg potassium chloride was fertilized to every plant.更多还原