河南烟区土壤钾素含量与分布

Content and Distribution of Potassium in Soils of Henan Tobacco Growing Areas

对河南烟区 2 116个土样钾素含量进行了分析 ,结果表明 :河南省土壤速效钾含量平均为188.88mg/kg ,全钾含量平均为 2 .2 8%。从不同烟区来看 ,土壤速效钾含量状况排序为 :豫西 >豫东 >豫西南 >豫南 >豫中 ;全钾含量排序为 :豫东 >豫西 >豫中 >豫南 >豫西南。从主要植烟土壤类型看 ,速效钾含量排序为 :红粘土 >潮土 >褐土 >砂姜黑土 >黄褐土 >黄棕壤 ;全钾含量排序为 :黄棕壤 >红粘土 >潮土 >褐土 >黄褐土 >砂姜黑土。根据河南烟区植烟土壤钾素含量及分布特点 ,提出了相应的施肥措施。

The contents of potassium in 2116 soil samples collected from tobacco growing areas in Henan Province were analyzed. The results showed that the average contents of rapidly available K and total K were 188.88 mg/kg and 2.28% respectively. The tobacco growing areas in order of contents of rapidly available K were west Henan>east Henan>southwest Henan>south Henan>middle Henan and in order of total K were east Henan>west Henan>middle Henan>south Henan>southwest Henan. The major types of tobacco soil in order of contents of rapidly available K were red clay>fluvo\|aquic soil>cinnamon soil>sajong black soil>yellow cinnamon soil>yellow brown earth and in order of total K were yellow brown earth>red clay>fluvo\|aquic soil>cinnamon soil>yellow cinnamon soil> sajong black soil. The suitable fertilization method was recommended based on the characteristics of potassium content and distribution of soil in Henan tobacco growing areas.