【摘要】 为探究不同类型Zn肥对赖草（Leymus secalinus）生长、草产量和品质及Zn富集的影响，筛选出赖草种植时优质高产的叶面施肥方案，试验使用含Zn浓度为0.2、0.4、0.8 mg/g的无机肥（ZnSO₄·7H₂O）和螯合肥（EDTA-Zn）处理盆栽赖草，以清水作为对照（CK），利用灰色关联度法对赖草指标进行综合分析，以筛选提高赖草微量元素含量和品质的最适微肥形态和浓度。结果表明：叶面喷施适宜浓度的ZnSO₄、EDTA-Zn均可显著促进赖草株高、茎粗从而增加生物量；显著增加其粗蛋白、粗脂肪、Zn含量，降低酸性洗涤纤维与中性洗涤纤维含量从而改善赖草品质（P<0.05）。相同浓度的EDTA-Zn处理对赖草Zn含量的增加效果显著优于ZnSO₄处理。经灰色关联度综合分析可知，叶面喷施不同浓度的EDTA-Zn的效果均优于ZnSO₄，且在0.4 mg/g的EDTA-Zn处理时可获得最优的赖草产量与品质。更多还原

【Abstract】 This study investigated the effects of different zinc （Zn） fertilizer types of on the growth,yield,quality,and Zn enrichment of Leymus secalinus,aiming to identify optimal foliar fertilization protocols.Potted L.secalinus were treated with inorganic （ZnSO₄-7H₂O） and chelated （EDTA-Zn,referred to as E-Zn） fertilizers at Zn concentrations of 0.2,0.4,and 0.8 mg/g.Water served as the control （CK）.A comprehensive analysis of L.secalinus indicators was conducted using the grey correlation method to identify the most suitable micro-fertilizer form and concentration for improving trace element content and overall quality.The results showed that foliar application of appropriate concentrations of ZnSO₄ and E-Zn significantly promoted the plant height and stem thickness of L.secalinus,leading to increased biomass.Both fertilizer types significantly increased contents of crude protein,ether extract and Zn （P<0.05）,while significantly reducing acidic detergent fiber and neutral detergent fiber （P<0.05）,thereby improving the quality of L.secalinus.Notably,the absorption efficiency of Zn from E-Zn was significantly superior to that from ZnSO₄ at the same concentration.The comprehensive gray correlation analysis indicated that foliar spraying with E-Zn consistently outperformed ZnSO₄ across different concentrations.The optimal L.secalinus yield and quality were achieved at an E-Zn concentration of 0.4 mg/g.更多还原