【摘要】 旱作苹果园深沟集中施肥的方法具有改善根区养分状况的作用,使土壤pH值降低,有机质和全氮的分解利用加快,特别是磷肥肥效显著提高,在根区形成了一个土壤肥库。该文还提出了在苹果生产上应用的具体建议。更多还原

【Abstract】 In this paper,method of deep-ditch manuring in arid farming apple orchard was evaluated. Deep-ditch manur-ing method possessed the action improving nutrient condition around root system. The soil pH was reduced. The de-composition and the utilization of soil nitrogon and organic matter were accelerated. Particularly,efficiency of phos-phate fertilization was improved remarkablely. A so-called fertilizer reservoir around root system was formed. Final-ly,some suggestions were recommended for fruit production.更多还原