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一、苹果1、施肥存在的问题及施肥原则针对苹果生产中有机肥料投入数量不足,部分果园立地条件差,土壤保水保肥能力差,集约化果园氮磷化肥用量普遍偏高,非石灰性土壤老果园土壤酸化现象普遍,中微量元素钙、镁和硼缺乏时有发生,石灰性土壤地区果园铁、锌和硼缺乏问题普遍,部分地区果农对基肥秋施的认识不足等问题,提出以下施肥原则:(1)秋季增施有机肥,提倡有机无机配合施用;依据土壤肥力条件和产量水平,适当调减氮
First, the apple 1, fertilization problems and principles of fertilizer In response to the lack of organic fertilizer inputs in the production of apple, some orchards poor site conditions, poor soil water retention and fertilizer, nitrogen and phosphorus fertilizer intensive orchard generally high, non-calcareous soil The phenomenon of soil acidification in the old orchards is common, with the occasional occurrence of trace elements calcium, magnesium and boron deficiency, the problem of iron, zinc and boron deficiency in orchards in calcareous soils, and the lack of understanding on the parting farmers’ Principles: (1) The application of organic fertilizer in autumn to promote organic and inorganic application; according to soil fertility conditions and yield levels, appropriate to reduce nitrogen