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宁晋县京宁复合肥厂利用北京农林科学院土壤肥料研究所的科研成果，针对本地区土壤开发出新产品──沸石包衣长效复合肥。该项目近日通过了省级技术鉴定。沸石包衣长效复合肥是针对不同作物营养需求特征，合理添加微量元素成份而研制成的系列产品，可供不同作物施用。长期施用
The Ningjin County Jingning Compound Fertilizer Plant utilizes the scientific research results of the Soil and Fertilizer Institute of the Beijing Academy of Agriculture and Forestry Sciences to develop a new product for the soil of this region: zeolite-coated long-acting compound fertilizer. The project recently passed the provincial technical appraisal. Zeolite-coated long-acting compound fertilizer is a series of products developed according to the nutritional requirements of different crops and reasonably added with trace elements, which can be applied to different crops. Long-term application