中文摘要：

现对果树控释肥的使用方法、使用时间和使用量对苹果产量和质量的影响效应进行研究,以推动控释肥在苹果生产中的科学施用。结果表明：苹果园施用控释肥以沟施为宜,施肥深度20cm,在春季1次或春、夏2次施用,盛果期果园每株使用量2～3kg为宜。

英文摘要：

The effect of the using method, time and amount of controlled release fertilizer on apple yield and quality were studied to promote the scientific application of controlled release fertilizer in apple production, The results showed that the furrow application of controlled release fertilizer on apple orchard was suitable. The best fertilization depth was 20 crn. And the appropriated amount of controlled release fertilizer in full fruit period was 2～3 kg per plant,fertilizing in spring only or in spring and summer twice application.