Position: Home > Articles > Distribution Characteristics of Soil Medium and Micro Nutrients in Citrus Orchards in Hunan and Suitable Fertilization Strategies
Soils
2020
(2)
287-293
湖南柑橘土壤中微量养分特征及施肥对策
作 者：
黄兰;周卫军;崔浩杰;周奕廷;曹胜;刘双
单 位：
关键词：
柑橘土壤;中微量养分;分布特征;施肥对策
摘 要：
为了弄清湖南省柑橘园土壤中、微量养分的丰缺及其分布特征,并合理调控柑橘园土壤中、微量养分,采集了湖南省柑橘园主产区14个县共84个土壤样品,检测了土壤中、微量元素的含量状况。结果表明:湖南省柑橘园土壤有86.8%样点呈酸性或强酸性;56.1%样点有机质含量偏低;交换性钙、交换性镁含量较适宜柑橘生长,但分布不均衡,其中湘南56%的样点钙含量不足,湘西南53.6%样点钙含量不足和64.3%样点镁含量不足;有效硫、铁、锰含量均偏高,偏高的比例分别为80.8%、86.9%,64.3%;有效铜含量丰富,但分布不均衡,其中湘南和湘西南分别有76.9%和78.6%样点含量偏高;76.2%样点有效锌含量适宜;85.5%样点有效硼处于缺乏状态;有效钼仅湘南有53.9%地区含量丰富,湘西北、湘西南地区含量适宜。相关性分析表明,柑橘园土壤pH与交换性钙、交换性镁及有效硫,有机质与有效硼、有效锌,以及其余养分间存在一定的相关性。因此,湖南省柑橘园土壤中、微量养分分布不均衡,3个主产区均存在制约柑橘生长发育的问题,据此建议调剂土壤pH,加大有机肥的施用,同时根际施用与叶面喷施相结合,适当补充硼、锌肥。
译 名：
Distribution Characteristics of Soil Medium and Micro Nutrients in Citrus Orchards in Hunan and Suitable Fertilization Strategies
作 者：
HUANG Lan;ZHOU Weijun;CUI Haojie;ZHOU Yiting;CAO Sheng;LIU Shuang;College of Resources and Environment, Hunan Agricultural University;
关键词：
Citrus soil;;Medium and micro nutrient;;Distribution characteristics;;Fertilization strategy
摘 要：
In order to clarify the status and distribution of medium and micro nutrients in soils of citrus orchards in Hunan and to instruct the rational fertilization, 84 soil samples were collected from citrus orchards in 14 counties in Hunan, and the contents of medium and micro elements in the soil samples were measured. The results showed that 86.8% of soil samples were acidic or strongly acidic. 56.1% of soil samples were low in soil organic matter content. Soil exchangeable calcium and magnesium were more suitable for citrus growth, but the spatial distribution was imbalanced, and 56% and 53.6% of soil samples were insufficient in calcium content in southern and southwest Huan, respectively, and 64.3% of soil samples in southwest Hunan were insufficient in soil magnesium content. 80.8%, 86.9% and 64.3% of soil samples were high in the contents of effective sulfur, iron and manganese, respectively. The effective copper content was rich, but the spatial distribution was imbalanced, 76.9% and 78.6% of soil samples were higher in copper content in south and southwest of Hunan, respectively. 76.2% of soil samples were suitable in effective zinc. 85.5% of soil samples were deficient in effective boron. Only 53.9% of soil samples in southern Hunan were rich in effective molybdenum, while soil samples were suitable in effective molybdenum in northwestern and southwestern Hunan. Correlation were existed between soil pH and exchangeable calcium, magnesium and effective sulfur, between organic matter and available boron, zinc, and between other nutrients. Therefore, the distribution of medium and micro nutrients were imbalanced in soils of citrus orchards in Hunan, and problems are existed in all main regions planting citrus, which restrict the growth and development of citrus. Thus, it is suggested to adjust the soil pH, increase the application of organic fertilizer, combine the application of rhizosphere with foliar spraying, and appropriately supplement boron and zinc fertilizers.
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