Liu Yin, Yan Hong-Yuan, Ou Xiao-Hong, Guo Lan-Ping, Liu Da-Hui
Pharmacy Faculty,Hubei University of Traditional Chinese Medicine Wuhan 430065,China.
Molecular Pharmacology Laboratory,Guizhou University of Traditional Chinese Medicine Guiyang 550025,China.
Zhongguo Zhong Yao Za Zhi. 2019 Dec;44(24):5382-5389. doi: 10.19540/j.cnki.cjcmm.20191101.102.
A minimal data set( MDS) for soil fertility evaluation of Chrysanthemum plantation areas of Macheng city was established by principal component analysis( PCA) combined with Norm values of soil fertility indices and correlation coefficients among indices. A radar map was used to visually reflect the fertility level of individual indicators. Then,the comprehensive index model was used to calculate the soil fertility quality index( SFQI),and the values of SFQI was used to cluster,and the results showed that MDS was composed of five indicators: organic matter( OM),total phosphate( TP),available phosphorus( Av P),available magnesium( Av Mg) and available ferrum( Av Fe). Radar maps showed that the fertility of available phosphorus( Av P) and available copper( Av Cu) was mostly different in the two town,and the fertility of available ferrum( Av Fe) is smallest different. Except for the effective manganese( Av Mn) fertility level of Huangtugang town was higher than that of Futianhe town,the rest were lower than that of Futianhe town. Through analysis,the sensitivity of SFQI value calculated by taking the contribution rate of MDS index in the principal component of the whole data set( TDS) as the weight was the highest,MDS could better replace TDS. The value of SFQI-MDS ranged from 0. 353 to 0. 833,with an average value of 0. 604 and a coefficient of variation of 22%. The results of SFQI-MDS clustering showed that soil fertility could be divided into four categories: grade Ⅰ( 0. 727-0. 833) was superior,accounting for 25. 0%,grade Ⅱ( 0. 615-0. 681)was good,accounting for 29. 2%,mainly distributed in Futianhe Town,grade Ⅲ( 0. 494-0. 589) was medium,accounting for29. 1%,and grade Ⅳ( 0. 353-0. 419) was poor,accounting for 16. 7%,mainly distributed in Huangtugang town. Soil fertility of Futianhe town was better than that of Huangtugang town. It is suggested that boron fertilizer and potassium fertilizer should be supplemented to Chrysanthemum morifolium in production practice,and the amount of phosphate fertilizer,magnesium fertilizer and nitrogen fertilizer should be increased appropriately. At the same time,the amount of organic fertilizer should be increased to enhance soil fertility and improve soil physical and chemical properties.
通过主成分分析（PCA）结合土壤肥力指标的标准值及指标间的相关系数，建立了麻城市菊花种植区土壤肥力评价的最小数据集（MDS）。利用雷达图直观反映各单项指标的肥力水平。然后，采用综合指数模型计算土壤肥力质量指数（SFQI），并以SFQI值进行聚类，结果表明MDS由有机质（OM）、总磷（TP）、有效磷（Av P）、有效镁（Av Mg）和有效铁（Av Fe）5项指标组成。雷达图显示，两镇有效磷（Av P）和有效铜（Av Cu）的肥力差异较大，有效铁（Av Fe）的肥力差异最小。除黄土岗镇有效锰（Av Mn）肥力水平高于福田河镇外，其余均低于福田河镇。经分析，以MDS指标在全数据集（TDS）主成分中的贡献率为权重计算得到的SFQI值敏感性最高，MDS能较好地替代TDS。SFQI-MDS值范围为0.353～0.833，平均值为0.604，变异系数为22%。SFQI-MDS聚类结果表明，土壤肥力可分为4类：Ⅰ级（0.727～0.833）为优，占25.0%；Ⅱ级（0.615～0.681）为良，占29.2%；主要分布在福田河镇；Ⅲ级（0.494～0.589）为中等，占29.1%；Ⅳ级（0.353～0.419）为差，占16.7%，主要分布在黄土岗镇；福田河镇土壤肥力优于黄土岗镇。建议在生产实践中，菊花应补充硼肥和钾肥，适当增加磷肥、镁肥和氮肥施用量；同时，应增加有机肥施用量，提高土壤肥力，改善土壤理化性质。
