岳阳市君山区农田土壤有效态微量元素含量及分布规律

Content and Distribution Regulation of Available Microelements of Farmland Soil in Junshan District of Yueyang City

在岳阳市君山区设置400个采样点,测定耕层(0~20 cm)土壤有效铁、有效锰、有效铜、有效锌、有效硼、有效钼含量。结果表明,君山区农田土壤中有效铁、有效铜、有效锌含量丰富,有效锰含量中等且分布较均匀,有效硼、有效钼整体缺乏。因此,当地应适当减少含铁、铜、锌的肥料及农用化学物品的施用,增施硼肥、钼肥,合理施用锰肥。

The available microelements（Fe,Mn,Cu,Zn,B and Mo）in arable layers（0-20 cm）of the farmland soils were determined from400 sampling points in Junshan District of Yueyang City.The results showed that the contents of the available Fe,Cu and Zn in the farmland soils wererich;the content of the available Mn in the soils was medium and distributed evenly;the contents of the available B and Mo in the farmland soils werelack in the whole sampling points.Therefore,application amount of fertilizer that contain Fe,Cu and Zn must be decreased,while the application amountof B fertilizer and Mo fertilizer must be increased,and application amount of Mn fertilizer must be reasonable.