秸秆直接还田提高了土壤的有效铁含量，但对有效铜、有效锌和有效锰含量影响不大。
The content of the available ferrum enhanced by recycled straws, but that of the available zincum, copper and manganese had no changed obviously in…
注铁后，叶子全铁含量与有效铁含量之间呈极显著的直线正相关，相关系数为0.9842。
There existed a significant positive linear correlation between total Fe and active Fe in leaves after injection of iron fertilizer, the coefficient of correlation being 0.9842.
有效铁在红土母质中分布规律与全铁相反，在草甸黑土中表现出明显的淀积特征，其余各土类中有效铁含量分布与全铁一致。
Available Fe, on the other hand, had obvious illuviation in meadow black soil. Some other available Fe had the same rule with total Fe.
结果表明：各土壤因素中以有效铁含量对黄瓜产量的贡献率最大，为0.7861；速效磷含量的贡献率次之，为-0.2865。
The results showed that the rate of contribution of available Fe to yield of cucumber was the biggest of factors(0.7861), the following is available P(-0.2865).
本文综述了利用基因工程提高植物铁含量和增加铁的生物有效度的方法。
Plant gene engineering can be used to increase the content and its bioavailability of iron in plant.
着重就降低水中的铁、锰含量进行了有效的试验，最终取得良好的效果和效益。
The effective experimentation about reducing the content of Fe-Mn in water, and its benefit is described in this paper.
本方法快速准确，为硅铁中有效硅的含量分析提供了一条捷径。
The method is rapid and accurate. The shortcut has been offered for analysis the effective silicon of ferro silicon alloys.
当地农户施用微量元素肥料很少，造成土壤有效铁、有效锰和有效铜含量的下降。
Trace elements fertilizer is rarely used in this region which leading to a decrease on the content of soil available iron, available Manganese, and available copper.
葡萄酒中铁含量过高容易引起铁破败病，蓝色下胶法是一种有效的除铁方法。
Superfluous iron in wine will cause the iron deposits. Blue fining is most effective against iron.
受垃圾渗滤液影响，垃圾场周边土壤有机物含量增加。试验结果显示，随着土壤有机物含量的增加，土壤中有效态铁锰含量增大。
With the influence of waste leachate seeping, the concentration of organic substances in landfill soil was higher than that in unpolluted soil.
讨论了利用七水硫酸亚铁生产饲料级一水硫酸亚铁的设备及生产条件，产品有效成分铁的含量达到30％以上。
The equipment and conditions are obtained for the production of feed grade FeSO4. The product contains 30% of Fe.
讨论了利用七水硫酸亚铁生产饲料级一水硫酸亚铁的设备及生产条件，产品有效成分铁的含量达到30％以上。
The equipment and conditions are obtained for the production of feed grade FeSO4. The product contains 30% of Fe.
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