红河烟区土壤主要养分含量及肥力适宜性评价

发布时间：2018-07-02 21:19

本文选题：烤烟 + 土壤养分　；参考：《西南农业学报》2017年10期

【摘要】：【目的】为了研究红河烟区土壤主要养分含量状况及植烟土壤适宜性。【方法】采用GPS技术在红河烟区取土壤样品299个,测定土壤主要养分含量,采用ArcGIS 9.2软件、地统计学和土壤肥力指标法(soil fertility index,SFI)对植烟土壤养分状况和肥力适宜性进行分析。【结果】红河州植烟土壤大部分酸碱度在5.5~7.5,适宜烤烟种植;土壤有机质含量适中,分布呈山区高、坝区低的趋势;水解性氮在植烟县市分布不均,整体呈现四周高、中间低趋势,52.33%的植烟土壤含量丰富,49.5%的土壤有效磷偏低;土壤有效磷分布呈西北高、东南低的趋势,含量中等及以上占50.5%;土壤速效钾空间分布不规则,平均含量为197.24 mg/kg,整体处于中等水平;96.65%的土壤水溶性氯含量小于30 mg/kg。【结论】全州大部分植烟土壤养分适宜性等级属于Ⅰ、Ⅱ、Ⅲ级,分别占总植烟土壤29.81%、34.39%、23.04%,适宜性稍差的Ⅳ级土壤占12.77%。
[Abstract]:[Objective] to study the main nutrient content of soil in Honghe tobacco area and the suitability of tobacco planting soil. [Methods] 299 soil samples were taken by GPS technology in Honghe tobacco area to determine the content of Soil main nutrients. ArcGIS 9.2 software, geostatistics and soil fertility index (soil fertility index, SFI) were used to determine the nutrient status of the soil. The most acidity and alkalinity of the soil planting soil in Honghe state is 5.5~7.5, which is suitable for the planting of flue-cured tobacco. The soil organic matter content is moderate, the distribution is high in the mountain area and the dam area is low. The distribution of hydrolytic nitrogen in the county and city is uneven, the whole is 4 weeks high, the middle trend is low, and 52.33% of the soil is rich in soil and 49.5%. The available phosphorus in soil is low, the distribution of available phosphorus in the soil is high in the northwest, the trend in the southeast is 50.5%, the spatial distribution of available potassium in the soil is irregular, the average content is 197.24 mg/kg, the whole is at the middle level, and the content of water soluble chlorine in 96.65% soil is less than 30 mg/ kg. [Conclusion] the suitability of most soil nutrient soil in the whole state Grade I, II and III accounted for 29.81%, 34.39% and 23.04% of tobacco planting soil respectively, and grade IV soil with poor suitability accounted for 12.77%.
【作者单位】：华中农业大学资源与环境学院;云南省烟草公司红河州公司;云南省农业科学院农业环境资源研究所;
【基金】：云南省烟草公司计划项目(2015YN19、2014YN25)
【分类号】：S158

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