云南昭通天麻不同产区土壤肥力特征与评价

发布时间：2018-06-27 15:14

本文选题：昭通天麻 + 不同产区　；参考：《西南农业学报》2016年11期

【摘要】：对云南昭通天麻不同产区进行土壤取样,并针对土壤所在的地理信息、生长环境和土壤理化指标进行测定分析和评价。结果表明,彝良和镇雄2个传统产区的土壤全氮、碱解氮、有效磷和速效钠含量都相对较高;新产区中的大关、永善与传统产区土壤肥力特点较为相近,威信、盐津2产地与传统产区土壤肥力水平差异较大。相关性分析表明,有机质、全氮、碱解氮、有效磷、有效锌及速效钠之间呈极显著正相关,全钾与其它土壤肥力分析指标呈负相关。对不同产区土壤肥力含量进行聚类分析,可分为4大类,彝良9个传统产区与大关寿山乡益株产区的土壤全氮、碱解氮、有机质极丰富,具有较高的土壤肥力相似性。昭通天麻产区以彝良为中心,为酸性黄壤,土壤中有机质、全氮、碱解氮、有效磷、有效锌和速效钠是产区土壤肥力特征评价的主要因素,其中大关、永善2个产区可作为新区主要发展区域。
[Abstract]:Soil samples were taken from different producing areas of Gastrodia elata in Zhaotong, Yunnan, and the geographical information, growth environment and physical and chemical indexes of soil were analyzed and evaluated. The results showed that the contents of soil total nitrogen, alkali-hydrolyzed nitrogen, available phosphorus and available sodium were relatively high in the two traditional producing areas of Yiliang and Zhenxiong, and the characteristics of soil fertility in the new producing areas were similar to those in the traditional areas. The difference of soil fertility level between Yan-jin 2 producing area and traditional producing area was great. Correlation analysis showed that organic matter, total nitrogen, alkali-hydrolyzed nitrogen, available phosphorus, available zinc and available sodium were positively correlated, while total potassium was negatively correlated with other soil fertility analysis indexes. Cluster analysis of soil fertility content in different production areas can be divided into 4 categories. Soil total nitrogen, alkaline hydrolyzed nitrogen and organic matter are abundant in 9 traditional producing areas of Yiliang and Shoushan town of Daguan, which have high similarity of soil fertility. In Zhaotong Gastrodia elata production area, with Yiliang as the center, soil organic matter, total nitrogen, alkali-hydrolyzed nitrogen, available phosphorus, available zinc and available sodium are the main factors in the evaluation of soil fertility characteristics. Yongshan 2 production areas can be used as the main development area of the new area.
【作者单位】：昭通市天麻研究院;云南省农业科学院药用植物研究所;昭通市天麻特产局;
【基金】：国家科技支撑计划(2013BAK13B04) 云南省科技计划重点项目(2012CG022) 云南省科技创新人才计划(2014HB040)
【分类号】：S567.239;S158

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