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当前位置: 首页 > 文章 > 赣南脐橙园土壤有效镁含量状况研究 果树学报 2013,30 (2) 241-247
Position: Home > Articles > Survey of soil available magnesium content at navel orange orchards in southern Jiangxi province Journal of Fruit Science 2013,30 (2) 241-247

赣南脐橙园土壤有效镁含量状况研究

作  者：
刁莉华;彭良志;淳长品;凌丽俐;李勋;薛珺;范玉兰;钟八莲
单  位：
西南大学柑橘研究所;江西省脐橙工程技术研究中心;国家柑橘工程技术研究中心
关键词：
脐橙园;赣南;有效镁
摘  要：
【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。
译  名：
Survey of soil available magnesium content at navel orange orchards in southern Jiangxi province
作  者：
DIAO Li-hua1,PENG Liang-zhi2,CHUN Chang-pin2,LING Li-li2,LI Xun3,XUE Jun3,FAN Yu lan3,ZHONG Ba-lian3(1Citrus Research Institute of Southwest University,2National Citrus Engineering Research Center,Chongqing 400712 China;3Navel Orange Engineering Research Center of Jiangxi,Ganzhou,Jiangxi 341000 China)
关键词：
Navel orange orchard;Southern Jiangxi province;Soil available magnesium
摘  要：
【Objective】This study aimed to understand the content of soil available magnesium at navel orange orchards in southern Jiangxi province.【Method】Uncultivated and cultivated soil samples collected from 446 orchards in 16 counties were analyzed in 2008.【Result】The results showed that soil acidification was obvious because the pH values of the cultivated soil samples were lower than that of the uncultivated soil samples.Both the average organic matter(OM) contents of uncultivated and cultivated soil samples collected from orchards in every county failed to reach the optimum level,but the average OM content of cultivated soil samples was higher than that of the uncultivated samples.The available magnesium(AM) contents of the uncultivated soil samples and cultivated soil samples were 35.19 mg.kg-1and 46.81 mg.kg1,respectively.89.52% of uncultivated soil samples and 87.65% of cultivated soil samples were deficient in AM;and only 6.11% of uncultivated soil samples and 5.29% of cultivated soil samples were sufficient in AM.In Xinfeng County,one of the three biggest navel orange production counties,the AM content of cultivated soil samples was only 65.30 mg.kg-1 on the average.Anyuan and Xunwu,the other two biggest navel orange production counties,the AM contents of cultivated soil samples were only 33.51 mg.kg-1and 31.35 mg.kg-1on the average,respectively,and 99.09% of orchards in Anyuan County and 94.07% of orchards in Xunwu County were deficient in AM.Both the soil pH values and soil organic matter contents showed highly significant positive correlation with soil AM contents.【Conclusion】Both the uncultivated and cultivated soils at navel orange orchards of southern Jiangxi province were found to be highly acidic and severely deficient in AM.It is necessary to apply lime and alkaline magnesium fertilizers at citrus orchards.

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