河南省不同烟区烤烟锌含量和土壤有效锌的分布特点

2004年在河南省11个地点采集了113个土壤样品和42个烤烟样品(C3F),分别对土壤有效锌和烤烟锌含量进行了测定分析。结果表明:①河南烟区烟叶锌含量平均为(37.23±6.27)mg/kg,变异系数为16.84%,变幅为20.91~70.01 mg/kg。烟叶锌含量以三门峡最高,为(46.35±17.91)mg/kg,平顶山最低,为(25.03±1.22)mg/kg;变异系数以漯河最高(63.25%),信阳最低(2.32%)。②河南烟区土壤有效锌含量平均为(1.19±0.77)mg/kg,变异系数为64.27%,变幅为0.44~5.43 mg/kg,其中严重缺锌(<0.50 mg/kg)的占3.91%,缺锌(0.50~1.00 mg/kg)的占41.21%,含锌量适宜(1.00~2.00 mg/kg)的占49.01%,含锌量较丰富(2.00~4.00 mg/kg)的占3.92%,含锌量丰富(>4.00mg/kg)的占2.00%。

Distribution of Zinc Content in Tobacco Leaf and Available Zinc Content in Soil in Different Areas of Henan Province

In 2004,113 soil samples and 42 flue-cured tobacco leaf samples form 11 districts of Henan province were collected and the available zinc content in soil and the zinc content in flue-cured tobacco leaf were determined,respectively.The result indicted that:①the mean of zinc content in flue-cured tobacco leaf,which ranged from 20.91 mg/kg to 70.01 mg/kg,was(37.23±6.27) mg/kg with the variation coefficient of 16.84%.The zinc content in flue-cured tobacco leaves was highest of(46.35±17.91) mg/kg for Sanmenxia,and lowest of(25.03±1.22) mg/kg for Pingdingshan.Luohe had the highest variation coefficient of 63.25%,and Xinyang had the lowest variation coefficient of 2.32%.②The mean of the available zinc content in soil,which ranged from 0.44 to 5.43 mg/kg, was(1.19±0.77) mg/kg with the variation coefficient of 64.27%.Among the total soil samples,samples whose available zinc content was low seriously(<0.50 mg/kg) accounted for 3.91%.The samples,which available zinc content was low(0.50～1.00 mg/kg),accounted for 41.21%;samples with medium available zinc content(2.00～4.00 mg/kg) accounted for 49.01%;samples of rich available zinc content(2.00～4.00 mg/kg) accounted for 3.92%;and samples whose available zinc content was very rich(>4.00 mg/kg) accounted for 2.00%.