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苹果树为多年生木本植物,根系入土深,寿命长。在整个生长发育过程中,苹果树除了有生长周期外,还有生命周期,在生长过程中,对养分需求有一定规律。因此对苹果树进行施肥时,要了解它的需肥特性和特点,做到因树因地合理施肥。一、施肥量根据苹果树的需肥规律,土壤养分测定结果和树龄,确定施肥量,平衡施肥。一般成年果园每667平方米应施纯氮20千克,五氧化二磷9～15千克,氧化钾20千克。氮磷
Apple tree is a perennial woody plant, root deep into the earth, long life. In the process of growth and development, in addition to the apple tree growth cycle, but also the life cycle, in the growth process, there is a certain law of nutrient demand. Therefore, the apple tree fertilization, it needs to understand its characteristics and characteristics of fat, so that due to the rational management of fertilization trees. First, the amount of fertilizer According to the law of apple trees need fertilizer, soil nutrients and tree age determination, to determine the amount of fertilizer, balanced fertilization. General adult orchard per 667 square meters should be applied 20 kg of pure nitrogen, phosphorus pentoxide 9 to 15 kg, 20 kg of potassium oxide. Nitrogen and phosphorus