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首页> 外文期刊>Journal of plant nutrition and soil science >Effects of ZnSO4 and Zn-EDTA applied by broadcasting or by banding on soil Zn fractions and Zn uptake by wheat (Triticum aestivum L.) under greenhouse conditions
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Effects of ZnSO4 and Zn-EDTA applied by broadcasting or by banding on soil Zn fractions and Zn uptake by wheat (Triticum aestivum L.) under greenhouse conditions

机译：ZnSO4和Zn-EDTA通过广播或通过小麦（Triticum aestivum L.）在土壤Zn分数和Zn摄取下的温室条件下施用的影响

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摘要

Zinc biofortification of staple food crops is essential for alleviating worldwide human malnutrition. Agronomic interventions to promote this should include fertilizer selection and management. A chelated Zn source, Zn-EDTA, and an inorganic Zn source, ZnSO4 x 7 H2O, were applied either by banding or by broadcasting in soil, and Zn fractions in soil and Zn uptake by wheat were determined in a pot experiment. Compared to ZnSO4 x 7 H2O, Zn-EDTA produced higher Zn concentration in grain regardless of application method and even at a lower application rate. Residual Zn fraction was the largest Zn fraction with both ZnSO4 and Zn-EDTA amendment. ZnSO4 banded in soil caused Zn fractions to be restricted to the Zn-amended soil band and resulted in lower grain Zn concentrations than did broadcast ZnSO4. Planting wheat slowed Zn fixation by promoting the maintenance of a high concentration of Zn fraction loosely bound to organic matter (LOM-Zn) in soil. Zn-EDTA was a better Zn source for Zn biofortification of wheat than was ZnSO4.
机译：主食作物的锌生物化化对于减轻全球人类营养不良是必不可少的。促进这一目标的农艺干预措施应包括肥料选择和管理。螯合的Zn源，Zn-EDTA和无机Zn源，ZnSO4 X 7 H 2 O通过带状或通过在土壤中进行施用，并在盆栽实验中测定土壤中的土壤中的Zn分数和Zn摄取。与ZnSO4 X 7 H 2 O相比，Zn-EDTA在谷物中产生更高的Zn浓度，无论应用方法如何，甚至以较低的施用速率。残留的Zn馏分是ZnSO4和Zn-EDTA修正的最大Zn级分。 ZnSO4在土壤中引起的Zn级分限制在Zn修正的土壤带中，并导致低谷物Zn浓度而不是播出ZnSO4。通过促进在土壤中松散地与有机物质（LOM-Zn）松散地结合的高浓度Zn级分，种植小麦减缓Zn固定。 Zn-EDTA是一种更好的Zn源，用于小麦的Zn生物化，而不是ZnSO 4。

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