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应用８６Ｒｂ研究钾在云南种植烟草３种类型土壤中的渗透流失。结果表明：０．１ｇＫ２Ｏ／ｋｇ土的处理，紫色土中钾流失量最多，水稻土次之，红壤流失量最少；紫色土和水稻土钾流失量随时间增加而增加；同一类型土壤，０．１ｇＫ２Ｏ／ｋｇ土的处理，钾在土壤中流失速度快，０．２ｇＫ２Ｏ／ｋｇ土和０３９ｇＫ２Ｏ／ｋｇ土的处理，钾在土壤中流失速度慢。残留在土壤表层的钾量：红壤＞水稻土＞紫色土；加入钾量和残留在表层土中钾量呈正相关；０．２ｇＫ２Ｏ／ｋｇ土和０．３ｇＫ２Ｏ／ｋｇ土处理，残留在各层土中钾量由表层向下层逐层减少，而０．１ｇＫ２Ｏ／ｋｇ土的处理，除表层外，向下逐层增加
Application of 86Rb to Study Potassium Permeation Loss in Three Types of Soils Planted with Tobacco in Yunnan Province. The results showed that: 0.1gK2O / kg soil treatment, purple soil potassium loss the most, followed by paddy soil, red soil loss the least; purple soil and paddy soil potassium loss increases with time; the same type of soil, The treatment of 1 gK2O / kg soil, the rapid loss of potassium in soil, 0.2 gK2O / kg soil and 039 gK2O / kg soil, the slow loss of potassium in soil. The amount of K remaining in the soil surface: red soil> paddy soil> purple soil; the amount of added potassium was positively correlated with the content of potassium in the surface soil; 0.2gK2O / kg soil and 0.3gK2O / kg soil were treated, The amount of potassium decreased from the surface layer to the layer by layer, while the treatment of 0.1 gK2O / kg soil, in addition to the surface layer, increases layer by layer