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1988年,91个代表性土样化验结果表明,山西省主要耕地土壤有效态稀土含量平均为13.23±6.06ppm,属潜在性缺乏。土壤有效态稀土含量一般随土壤有机质、碳酸钙含量的增加、pH值的升高而降低。稀土农用效果与土壤有效态稀土含量,作物对稀土元素的敏感性及稀土的施用技术密切相关。目前,山西省稀土的施用方法以拌种、喷施为宜,拌种量一般每公斤种子400～1000毫克,喷施浓度以300～500ppm为佳。
In 1988, the results of 91 representative soil samples showed that the average effective rare earth content of main cultivated land in Shanxi Province was 13.23 ± 6.06ppm, which was a potential lack. Soil active rare earth content generally with the soil organic matter, calcium carbonate content increases, pH value decreases. The effects of rare earth agricultural and soil available rare earth content, the sensitivity of crops to rare earth elements and the application of rare earth technology are closely related. At present, the method of rare earth in Shanxi Province to seed dressing, spraying appropriate, seed dressing generally 400 to 1000 mg per kilogram of seeds, spray concentration to 300 ~ 500ppm better.