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在常规的苹果树栽培管理上惯以施氮肥为主,而磷、钾肥较少,往往造成氮、磷、钾元素比例失调。影响树体营养物质积累,以致降低坐果率,影响花芽分化,降低品质。为了提高肥料的利用率,挖掘成龄苹果树的增产潜力,我们对26年生国光苹果中产树,全冠喷施河南省商丘市稀土微肥示范厂生产的定型稀土产品。
Commonly used in the management of apple tree cultivation of nitrogen-based, and less phosphorus and potassium, often resulting in the proportion of nitrogen, phosphorus and potassium imbalance. Affect the accumulation of tree nutrients, resulting in reduced fruit set rate, affecting flower bud differentiation and reduce quality. In order to increase the utilization rate of fertilizer and tap the potential for increasing production of mature apple trees, we spray stereotyped rare earth products produced by 26-year-old Chinese apple trees with middle-grade and full crowns at Shangqiu City, Henan Province.