广西桂南蔗区土壤养分状况调查分析 |
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引用本文: | 曾艳,;黄金生,;周柳强,;谢如林,;刘永贤,;谭裕模,;谭宏伟.广西桂南蔗区土壤养分状况调查分析[J].广西农业科学,2014(12):2198-2202. |
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作者姓名: | 曾艳 ;黄金生 ;周柳强 ;谢如林 ;刘永贤 ;谭裕模 ;谭宏伟 |
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作者单位: | [1]广西农业科学院农业资源与环境研究所,南宁530007; [2]广西农业科学院甘蔗研究所,南宁530007 |
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基金项目: | 水利部科技专项项目(2013010); 广西自然科学基金项目(2013GXNSFBA019057); 广西农业科学院科研基本业务费项目(2013YM19,2014JZ18,2013YF06) |
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摘 要: | 【目的】调查分析广西桂南蔗区土壤养分状况,为桂南蔗区土地的合理利用及科学施肥提供参考依据。【方法】结合GIS技术,采集广西桂南甘蔗种植区的典型土壤类型的耕层土壤样本498份,测定其养分含量状况。【结果】酸性土壤(p H〈6.5)是桂南蔗区的主要类型(占95.5%),其有机质含量6.03-44.58 g/kg、碱解N 14.0-175.0 mg/kg、速效P1.7-95.0 mg/kg、速效K 11.0-358.0 mg/kg,不同的养分含量大多处于中等水平,与高产土壤条件相比仍有较大差距。在各种微量元素中,B的平均含量为0.24 mg/kg,98%的土壤缺乏B;有效Mg的平均含量为62.34 mg/kg,69.08%的土壤缺Mg;活性Ca的平均含量为592.68mg/kg,54.84%的土壤活性Ca偏低;有效Zn的平均含量为0.93 mg/kg,19.08%的土壤缺Zn;有效Cu的平均含量为0.65mg/kg,7.02%的土壤缺Cu。【结论】广西桂南蔗地土壤肥力总体水平不高,有机质偏低,速效N、P、K含量均处于中下水平,Fe、Mn含量较丰富,大部分土壤有效Cu和有效Zn含量整体处于中等水平,因此生产上应适当增施有机肥、N、P、K肥。
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关 键 词: | 蔗区 土壤 pH 微量元素 广西桂南 |
Investigation of soil nutrient status in sugarcane-growing area of south Guangxi |
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Institution: | ZENG Yan, HUANG Jin-sheng, ZHOU Liu-qiang, XIE Ru-lin, LIU Yong-xian, TAN Yu-mo, TAN Hong-wei (1Agricuhural Resources and Environmental Research Institute, Guangxi Academy of Agricultural Sciences,Nanning 530007, Guangxi; 2Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, Guangxi) |
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Abstract: | 【Objective】Soil nutrient status in sugarcane-growing area of south Guangxi was investigated to provide references for appropriate soil utilization and scientific fertilization. 【Method 】Applying GIS,498 soil samples were collected from typical sugarcane-growing area of south Guangxi. The nutrient status of these samples was measured. 【Result 】Acidified soil(p H6.5), as the typical and major type, occupied 95.5% of the entire sugarcane-growing area of south Guangxi. SOM content of soil samples in the study area ranged from 6.03 g/kg to 44.56 g/kg. Available N content was 14.0-175.0 mg /kg. Available P content was 1.7-95.0 mg/kg. Available K content was 11.0-358.0 mg/kg. Most of soil nutrients was in medium level,not good enough for high sugarcane yield. Regarding all kinds of microelements,available B content of soil reached 0.24 mg/kg, which was insufficient in 98% soil. The average available Ca,Mg,Zn and Cu contents were recorded as 592.68,62.34,0.93 and 0.65 mg/kg,which was insufficient in 54. 84 %, 69. 08 %,19. 08 % and 7. 02 % soil, respectively. 【 Conclusion 】 In sugarcane- growing area of south Guangxi, containing low organic matter, soil fertility is low. Available N,P and K content are low or moderate, while Fe and Mn content are a lot.Available Cu and Zn content are in medium level. Accordingly, more organic fertilizer, N,P and K fertilizer should be applied in production. |
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Keywords: | sugarcane-growing area soil pH microelement south Guangxi |
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