Soil factors associated with zinc deficiency in crops and humans
Soil factors associated with zinc deficiency in crops and humans
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DOI：
10.1007/s10653-009-9255-4
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发表时间：
2009-10-01
影响因子：
4.2
通讯作者：
Alloway, B. J.
中科院分区：
文献类型：
--
作者：
Alloway, B. J.
缺锌是世界农作物中最普遍的微量元素缺乏问题。锌对植物和动物都是必需的，因为它是参与许多生化途径的酶和蛋白质的结构成分和调节辅因子。数百万公顷的农田受到锌缺乏的影响，大约三分之一的人口患有锌摄入不足。影响植物锌有效性的主要土壤因子是土壤溶液中低的全锌含量、高的pH值、高的方解石和有机质含量以及高浓度的Na、Ca、Mg、碳酸氢盐和磷酸盐。玉米是最易感的谷物作物，但在石灰性土壤上种植的小麦和在洪泛土壤上种植的低地水稻也很容易缺锌。锌肥用于预防锌缺乏症和谷物的生物强化。
Zinc deficiency is the most ubiquitous micronutrient deficiency problem in world crops. Zinc is essential for both plants and animals because it is a structural constituent and regulatory co-factor in enzymes and proteins involved in many biochemical pathways. Millions of hectares of cropland are affected by Zn deficiency and approximately one-third of the human population suffers from an inadequate intake of Zn. The main soil factors affecting the availability of Zn to plants are low total Zn contents, high pH, high calcite and organic matter contents and high concentrations of Na, Ca, Mg, bicarbonate and phosphate in the soil solution or in labile forms. Maize is the most susceptible cereal crop, but wheat grown on calcareous soils and lowland rice on flooded soils are also highly prone to Zn deficiency. Zinc fertilizers are used in the prevention of Zn deficiency and in the biofortification of cereal grains.