USE OF VIVIANITE (FE3(PO4)2.8H2O) TO PREVENT IRON CHLOROSIS IN CALCAREOUS SOILS
USE OF VIVIANITE (FE3(PO4)2.8H2O) TO PREVENT IRON CHLOROSIS IN CALCAREOUS SOILS
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DOI：
10.1007/bf01064228
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发表时间：
1992-01-01
期刊：
影响因子：
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通讯作者：
TORRENT, J
中科院分区：
文献类型：
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作者：
EYNARD, A;DELCAMPILLO, MC;TORRENT, J
由于各种原因，磷酸铁可以有效地纠正石灰性土壤中的铁黄化。为了验证这一假设，进行了几个盆栽试验，使用铁叶绿素敏感鹰嘴豆（鹰嘴豆L.）种植在土壤中，部分氧化的蓝铁矿（Fe 3（PO 4）2.8H2O）和Fe（III）磷酸盐具有不同的特性。以1 g kg-1的速率与土壤混合的Vivianites在防止黄化方面与Fe螯合物（FeEDDHA）一样有效。然而，Fe（III）磷酸盐的有效性较低，这表明所用磷酸盐中Fe（II）的存在是其对植物的Fe供应价值的关键因素。蓝铁矿的有效性，然而，似乎在很大程度上是独立的Fe（II）contents.The未来的蓝铁矿作为一个铁修正案将不仅取决于经济因素（生产和应用成本），但也对它的长期能力，以释放植物可利用的铁在土壤环境中。
For various reasons, iron phosphate might be effective in correcting Fe chlorosis in calcareous soils. To test this hypothesis, several pot experiments were conducted using an Fe chlorosis-sensitive chickpea (Cicer arietinum L.) cultivar cropped in soils to which partially oxidized vivianites (Fe3(PO4)2.8H2O) and Fe(III) phosphates with different characteristics had been added. Vivianites mixed with the soil at a rate of 1 g kg-1 were as effective in preventing chlorosis as Fe chelate (FeEDDHA). However, the effectiveness of Fe(III) phosphates was less, suggesting that the presence of Fe(II) in the phosphates used was a key factor in their Fe-supplying value to plants. The effectiveness of vivianites, however, seemed to be largely independent of their Fe(II) content.The future of vivianite as a Fe amendment will depend not only on economic considerations (production and application costs) but also on its long-term capacity to release plant-available Fe in soil environments.