范围本规程规定了苹果专用控释肥应用技术的专用控释肥配比,施用技术,标识、包装、运输和贮存等。本规程适用于我国苹果专用控释肥在苹果园中的应用。苹果专用控释肥配比苹果树的施肥,在增施有机肥料和深翻改土的基础上,应着重考虑氮、磷、钾三元素的施用,同时注重钙、铁、锌、 Scope This regulation provides for the application of special controlled release fertilizer apple controlled release fertilizer ratio, application technology, labeling, packaging, transportation and storage. This regulation applies to our country apple special controlled release fertilizer in apple orchard application. The application of apple-specific controlled release fertilizers to apple tree fertilization should focus on the application of three elements of nitrogen, phosphorus and potassium while emphasizing the application of organic fertilizers and deep soil amendment, while paying attention to the application of three elements of calcium, iron, zinc,