施肥对寒富苹果养分累积及产量贡献的影响

Effect of fertilization on nutrient accumulation and yield of Hanfu apple

于2013~2014年在辽宁省沈阳市寒富苹果园进行不同施肥试验,研究了不同施肥处理对苹果产量及叶片养分累积的影响。结果表明,苹果营养叶片含磷、钾量变化趋势为先降低再增加趋势,含氮量呈下降趋势。结果叶片含氮、钾量变化趋势均为先下降再增加趋势,含磷量呈上升趋势。寒富苹果专用肥3号产量最高,比常规施肥高6.64%。果树生长前期以施用氮磷为主,后期施用磷钾为主,适当补充氮素,提高树体营养水平增加产量。

A field study was conducted to investigate the effect of different fertilization treatments on yield and leaf nutrient accumulation of Hanfu apple in an apple orchard in Shenyang, Liaoning province during 2013~2014. The results showed that the contents of phosphorus and potassium in nutrition leaves were decreased first and then increased, while the contents of nitrogen in nutrition leaves were decreased. The contents of nitrogen and potassium in yielding leaves were decreased first and then increased, while the amount of phosphorus in yielding leaves was gradually increased. The yield of Hanfu apple was highest under application of No.3 fertilizer, which was 6.64% higher than the conventional fertilization. This study indicated that applying nitrogen and phosphorus fertilizers in the earlier growth stage of apple and phosphorus and potassium fertilizers in the later growth stage could increase the yield of Hanfu apple.