对河北省主要棉区土壤进行土壤钾素背景值分析,结果表明,以黑龙港流域保定、沧州的中早熟品种区速效钾最高,唐山、秦皇岛早熟品种区最低,而邢台、邯郸的中热品种区介于中间。不同土壤类型差异也很大,以潮土和石灰性褐土的土壤速效钾含量最高,平均含量超过100mg/kg,淋溶褐土最低,只有80mg/kg。速效钾含量与层间钾含量呈正相关关系。 The results of soil potassium background analysis showed that the available potassium was the highest in the middle-early-maturing varieties in Baoding and Heilongjiang basins, and the lowest in Tangshan and Qinhuangdao, while the middle-hot varieties in Xingtai and Handan The area is in the middle. Different types of soils also have great differences. The content of available potassium in soils with fluvo-aquic soil and calcareous cinnamon soil is the highest, with the average content over 100mg / kg and leaching brown cinnamon soil at the lowest, only 80mg / kg. There was a positive correlation between available potassium and interlayer potassium content.