国内外泥炭农用特性比较研究

Comparisons of physical and chemical characteristics of peats for agricultural utilization produced by domestic and for.eign manufacturers

  • 摘要: 比较研究国内外商品泥炭农用物理化学特性结果表明,与国外泥炭相比,国产泥炭总孔隙度小,容重、灰分含量、pH值和电导率均高,阳离子代换量低;国产泥炭全量养分含量较高,全N、全P、全K分别约为进口泥炭的2倍、3-4倍和3~5倍。国产泥炭与进口泥炭相比微量元素全Fe和全Mn含量差异最大;除速效铁外国产泥炭其他速效养分与进口泥炭相比差异较小,而调试好pH值的进口泥炭速效钙含量较高。

     

    Abstract: Physical and chemical characteristics of domestic and foreign peats for agricultural utilization were compared.The results show that compared with the peat produced by foreign manufacturers,the domestic peat has a lower totalporosity,and higher bulk density and ash content.The domestic peat has less cation exchange capacity than the foreignpeat.Both pH and electric conductivity of the domestic peat are relatively higher.The N,P,and K contents of the domestic peat are 2,3~4 and 3~5 times higher than those of the foreign peat,while the domestic peat has similar available nutri-ents with foreign peat,except available iron.Foreign peat of which the pH is adjusted has much more available Ca than do-mestic peat does.

     

/

返回文章
返回