刁莉华;彭良志;淳长品;凌丽俐;李勋;薛珺;范玉兰;钟八莲;

• 1:西南大学柑橘研究所
• 2:国家柑橘工程技术研究中心
• 3:江西省脐橙工程技术研究中心

摘要(Abstract)：

【目的】为了解赣南脐橙园土壤有效镁含量状况,【方法】对赣南16县446个抽样脐橙园的土壤背景样和土壤农化样进行了分析。【结果】结果表明,与土壤背景样相比,农化样pH值下降,土壤酸化明显;各县的土壤背景样和农化样有机质平均含量都未达到适宜值,但各县农化样有机质含量均高于背景样;全部背景样和全部农化样的有效镁含量平均值仅分别为35.19 mg·g-1和46.81 mg·g-1,背景样和农化样有效镁缺乏的果园比例分别达到了89.52%和87.65%,只有6.11%背景样和5.29%农化样有效镁含量达到适量水平;土壤农化样有效镁含量最高的是赣南3个脐橙大县之一的信丰,但也仅为65.30 mg·g-1,而另2个脐橙大县安远和寻乌的土壤农化样有效镁含量仅分别为33.51 mg·g-1和31.35 mg·g-1,这两县缺镁果园比例也分别高达99.09%和94.07%。土壤pH值和有机质均与有效镁含量呈极显著正相关。【结论】赣南脐橙园背景土壤和农化土壤酸性强、有效镁含量严重缺乏,需增施石灰和碱性镁肥。

关键词(KeyWords)： 脐橙园;赣南;有效镁

Abstract:

Keywords:

基金项目(Foundation): 现代农业(柑橘)产业技术体系建设专项;; 国家自然科学基金(31201587);; 国家公益性行业(农业)科研专项(200903023);; 重庆市科技攻关计划项目(cstc2012gg-yyjsB80007)

作者(Author): 刁莉华;彭良志;淳长品;凌丽俐;李勋;薛珺;范玉兰;钟八莲;

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