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为探索钙肥对花生增产的效果，1998年新乐市上肥站在贫钙土壤上进行了增施磷石膏钙肥示范（磷石膏来源于石家庄化肥厂’F产磷酸一铁的下脚料）。示范田667n！施优质粗肥5000lq，尿素1519，过磷酸钙70—100h9，硫酸钾12－16k9，磷石膏75kg。其中地膜花生除留肘9过磷酸钙播种时集
In order to explore the effect of calcium fertilizer on the peanut yield, Shanglei Station of Xinle City was used to demonstrate the application of phosphogypsum calcium fertilizer in 1998 (Phosphogypsum originates from the waste of F-iron phosphate-iron from Shijiazhuang Fertilizer Factory) . Demonstration field 667n! Shi quality coarse 5000lq, urea 1519, superphosphate 70-100h9, potassium sulfate 12-16k9, phosphogypsum 75kg. Among them, the peanut mulch was set aside while elbow 9 sodalotrophic seeding