| 广西蔗区土壤肥力特征与评价 |
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| 引用本文： | 曾艳,周柳强,黄金生,区惠平,朱晓晖,谭宏伟,谢如林.广西蔗区土壤肥力特征与评价[J].农业科学与技术,2017,18(3). |
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| 作者姓名： | 曾艳 周柳强 黄金生 区惠平 朱晓晖 谭宏伟 谢如林 |
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| 作者单位： | 1. 广西农科院农业资源与环境研究所,广西南宁,530007;2. 广西农科院甘蔗研究所,广西南宁,530007 |
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| 基金项目： | Guangxi Natural Science Foundation，Guangxi Scientific Research and Development Program，Science and Technology Program of Wuming District;Guangxi Province，Science and Technology Development Fund of Guangxi Academy of Agricultural Sciences，Major Science and Technology Project of Ministry of Agriculture (201203030).广西自然科学基金项目，广西科学研究与开发计划项目，广西南宁市武鸣区科技计划项目，广西农业科学院科技发展基金，农业部科技专项 |
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| 摘 要： | 目的]通过分析评价广西甘蔗种植区的土壤肥力状况,为甘蔗科学合理种植及施肥提供理论依据,并进一步完善广西蔗地土壤肥力评价体系.方法]对采自广西甘蔗种植区3 006个样点的耕层土壤样品进行养分测定,并采用改进的Nemerow肥力综合指数法评价该基地土壤的肥力特征.结果]试验结果表明,广西蔗区土壤质地粘重,绝大多数土壤偏酸性,平均值为4.94;土壤有效硼缺乏,平均含量为0.24 mg/kg;土壤交换性镁含量偏低,平均值为62.34 mg/kg;有机质含量一般,碱解N、速效P、速效K、有效铜、有效锌、有效锰、有效钙含量总体处于中等水平,但呈现养分区域不平衡现象与高产土壤条件相比仍有较大差距.改进的Nemerow肥力综合指数法评价结果显示,蔗地土壤肥力为Ⅲ级,即低肥力水平,综合肥力指数为0.56.单项肥力指数有效铜,有效锌,交换性镁,速效,有效锰,碱解氮处于贫瘠水平,其他指标处于一般肥力水平或较高肥力水平.结论]广西甘蔗种植区土壤肥力总体属于较低水平;采用上述综合评价方法,可提高土壤肥力评价的定量化水平和科学性,从而可减少评价过程中主观因素的影响.
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| 关 键 词： | 耕层土壤 肥力特征 评价 甘蔗 |
Characteristics and Evaluation of Soil Fertility in Sugarcane-producing Areas in Guangxi |
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| Yan ZENG,Liuqiang ZHOU,Jinsheng HUANG,Huiping OU,Xiaohui ZHU,Hongwei TAN,Rulin XIE.Characteristics and Evaluation of Soil Fertility in Sugarcane-producing Areas in Guangxi[J].Agricultural Science ＆ Technology,2017,18(3). |
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| Authors: | Yan ZENG Liuqiang ZHOU Jinsheng HUANG Huiping OU Xiaohui ZHU Hongwei TAN Rulin XIE |
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| Abstract: | Objective] Soil fertility in Guangxi sugarcane-growing areas was evaluated to provide theoretical reference for sugarcane scientific planting and fertilization and further optimize evaluation system for soil fertility in Guangxi sugarcane-growing areas.Method] Nutrients of soil samples in 3 006 plots were measured,and fertility characters were evaluated based on the improved Nemerow composite index method.Result] Soil in Guangxi sugarcane-growing area was sticky and acidic with an average pH value of 4.94.Available B was insufficient with an average content of 0.24 mg/kg.Exchangeable Mg was low with an average content of 62.34 mg/kg.Organic matter content was moderate.The contents of alkali N,rapidly available P,rapidly available K,available Cu,available Zn,available Mn and available Ca were moderate.However,unlike the soil in high-yield areas,there was unbalanced nutrition distribution.According to Nemerow integrated index method,soil fertility in sugarcane-growing areas was grade Ⅲ,namely low fertility.The integrated fertility index was 0.56.Individual fertility indexes including rapid available Cu,rapidly available Zn,exchangeable Mg,available Mn,rapidly available manganese Mn and alkali N were at poor level.Other indexes were at medium or high level.Conclusion] It could be concluded that soil fertility in Guangxi sugarcane-growing area was generally low.The above-mentioned evaluation method could help to build a quantified and scientific soil fertility evaluation system and reduce the impacts of subjective factors during evaluation process. |
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| Keywords: | Soil Fertility characteristics Evaluation Sugarcane |
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