河南烟区土壤硫、镁及微量元素的含量与分布

Contents and Distribution of Sulfur, Magnesium and Microelements in Soil of Henan Tobacco Growing (Areas)

为全面了解河南烟区土壤的中、微量元素含量状况,采集了河南省58个植烟县(市)3362个耕层的土样,并分析测定了有效硫、交换性镁及有效性微量元素的含量。结果表明:河南植烟土壤有效硫、交换性镁、有效铁、锰、铜、锌、钼、硼平均含量分别为53 57、335 2、8 43、7 91、1 11、1 22、0 025和0 37mg/kg。河南烟区7 2%的土壤中缺硫,可通过施硫酸钾来补充;烤烟施肥中应注意补充锌、钼、硼3种微量元素。

In order to better understand the contents of sulfur, magnesium and microelements in the soil of Henan (tobacco) growing areas, 3362 soil samples were collected from 58 counties in Henan Province and the contents of available sulfur, exchangeable magnesium and available microelements in the soil were determined. The results showed that the average contents of available sulfur, exchangeable magnesium, available Fe, Mn, Cu, Zn, Mo and B were 53.57, 335.2, 8.43, 7.91, 1.11, 1.22, 0.025 and 0.37 mg/kg, respectively. 7.2% of Henan tobacco growing soil were short of sulfur, and K2SO4 fertilizer should be applied. The microelements, Zn, Mo and B, should be also complemented in flue-cured tobacco fertilization.