【摘要】 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。更多还原

【Abstract】 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.更多还原