苹果树一年四季都可使用叶面喷肥技术。叶面喷肥养分分配均衡,对生长中心影响小,吸收速度快,用量少,不受土壤淋溶和固定影响,有效性好,用于补充磷素和其他微量元素效果尤其明显。叶面喷肥就是将低浓肥料水溶液喷在叶的正反两面或枝、干上,使树体直接吸收,一般喷后15分钟至2小时便可吸收,10~15天叶片对肥料元素反应最明显,以后逐渐下降,是一种简单、省 Apple trees can be used throughout the year foliar fertilizer technology. Foliar fertilizer distribution of nutrients balanced, small impact on the growth center, fast absorption, less dosage, free from soil leaching and fixed effects, and effective, for the additional effect of phosphorus and other trace elements in particular. Foliar fertilizer is the low concentration fertilizer solution sprayed on both sides of the leaves or branches, dry, the tree body directly absorbed, usually 15 minutes to 2 hours after spraying can be absorbed, 10 to 15 days leaves on the fertilizer element reaction The most obvious, and then gradually declined, is a simple, provincial