山东省林业科学研究所的科研人员,根据黄河冲积平原的土壤营养特点和桃树、梨树及苹果树的需肥特性,经试验研制而成新型高效果树专用肥。此种肥料除含有氮、磷、钾、硫等常量元素外,还含有铁、锰、锌、硼等多种微量元素,各营养元素总量大于50%。经多点使用试验证明,使用该肥后,可使果品产量提高 According to the nutrient characteristics of the soil in the alluvial plain of the Yellow River and the fertilizing characteristics of peach, pear and apple trees, researchers at Shandong Forestry Research Institute have made the research and developed a new type of high-effect fruit tree special fertilizer. In addition to such fertilizers contain nitrogen, phosphorus, potassium, sulfur and other major elements, but also contains iron, manganese, zinc, boron and other trace elements, the total amount of more than 50% of nutrients. The multi-point use of the trial proved that the use of the fertilizer, the fruit can increase production