河北省主要棉区土壤钾素含量背景值分析

The Distribution and Content of Soil Potassium in Hebei Cotton Production Area

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 potassium content of main soil background of cotton was analyzed. The result showed that the available K was highest at the middle early mature period area, including Baod-ing and Cangzhou, Qinghuangdao, the early mature period area contained lowest K. Xingtai, Handan, was in the middle mature areas. There was a difference among different soil types The Chao soil and calcareous cinnamon soil contained highest available K, with value over 100mg/ kg. Leached cinnamon soil contained lowest available K, only 80mg/kg. The available K content has a correct relation with nonexchangeable K.