| 李丽荣,王玉荣,周志高,丁昌峰,王兴祥.叶面喷施无机和螯合钙、锌肥对花生的降镉效果[J].农业环境科学学报,2025,44(6):1439-1450. |
| 叶面喷施无机和螯合钙、锌肥对花生的降镉效果 |
| Effects of foliar application of inorganic and chelated calcium and zinc fertilizers on cadmium reduction in peanuts |
| 投稿时间：2024-05-24 |
| DOI：10.11654/jaes.2024-0436 |
| 中文关键词: 花生 镉 螯合肥 叶面喷施 亚细胞分布 |
| 英文关键词: peanut cadmium chelated fertilizer foliar application subcellular distribution |
| 基金项目:国家现代农业产业技术体系项目（CARS-13） |
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| 中文摘要: |
| 为研究叶面喷施中微肥对花生籽粒镉（Cd）含量的影响，通过盆栽和田间试验，分析叶面喷施无机钙肥（硝酸钙）、无机锌肥（硫酸锌）及不同螯合钙/锌肥（EDTA螯合钙/锌、糖醇螯合钙/锌）对4种花生品种（皖花4号、粤油43、花育22号和湘花2008）籽粒的降Cd效果，并探究降Cd效果最优的叶面肥种类及其降Cd机理。盆栽试验结果表明，叶面喷施EDTA螯合钙（EDTA-Ca）和EDTA螯合锌（EDTA-Zn）处理的降Cd效果最优，4个花生品种降Cd率可达到15.1%~30.7%。田间试验进一步验证了EDTA-Ca和EDTA-Zn处理的降Cd效果，籽粒降Cd率可达24.0%~40.0%。选取品种粤油43的EDTA-Ca和EDTA-Zn两个处理进行降Cd机理探究，结果表明EDTA-Ca、EDTA-Zn处理显著增加了Cd在花生茎（6.4%、13.6%）和叶（37.6%、26.9%）中的积累，增加了Cd在茎叶细胞器和可溶性组分中的占比，显著降低了Cd从茎叶向籽粒的转运。研究表明，EDTA螯合钙、锌肥可显著降低花生籽粒Cd含量。 |
| 英文摘要: |
| The influence of foliar application of micronutrients on the cadmium（Cd）content in peanut grains remains ambiguous. This study examines the effects of foliar application of inorganic calcium fertilizer（calcium nitrate）, inorganic zinc fertilizer（zinc sulfate）, and different chelated calcium/zinc fertilizers（EDTA chelated calcium/zinc, sugar alcohol chelated calcium/zinc）on the reduction of Cd in four peanut varieties（Wanhua No. 4, Yueyou 43, Huayu No. 22, and Xianghua 2008）through pot and field experiments. The objective is to identify the most effective foliar fertilizer for reducing Cd content and to elucidate its underlying mechanism. Results from the pot experiments revealed that the foliar application of EDTA chelated calcium（EDTA-Ca）and EDTA chelated zinc（EDTA-Zn）treatments had the best Cd reduction effect, achieving a Cd reduction rate of 15.1% to 30.7% across all four peanut varieties. Field experiments further validated the Cd reduction effect of EDTA-Ca and EDTA-Zn treatments, with Cd reduction rates in grains ranging from 24.0% to 40.0%. Mechanistic studies on the Cd reduction effect of EDTA-Ca and EDTA-Zn treatments in the Yueyou 43 variety demonstrated that EDTA-Ca and EDTA-Zn treatments significantly increased Cd accumulation in peanut stems（6.4%, 13.6%）and leaves（37.6%, 26.9%）,increased the proportion of Cd in organelles and soluble fractions in stems and leaves, and significantly reduced Cd translocation from stems and leaves to grains. In conclusion, EDTA-chelated calcium and zinc fertilizers significantly reduce Cd content in peanut grains. |
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