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目的对张掖地区不同板蓝根种植区域土壤pH、有机质、全N、全P、速效P、全K、速效K及其含量进行检测、相关性分析及聚类分析,为张掖地区板蓝根药材产业化发展提供土壤因子依据。方法采用pH计法、重铬酸钾容量法、凯氏定氮法、HClO4-H2SO4法、0.05mol/L NaHCO3浸提法、NaOH熔融-火焰光度法、NH4OAc浸提-火焰光度法对土壤中有机质、全N、全P、速效P、全K、速效K含量依次测定,然后对数据进行相关性和聚类分析。结果张掖地区不同板蓝根种植区土壤因子含量高低不同,呈现出一定差异性,其中有机质和全K平均含量较高,分别为2.23%和4.30%;速效P和速效K变异程度最大,分别为55.37%和57.43%,土壤pH变异程度最小,其RSD仅为3.57%。结论张掖地区不同板蓝根产地土壤因子含量不尽相同,海拔与经、纬度对其含量高低影响显著,海拔与有机质和全N均呈显著正相关,与纬度呈显著负相关;经度与速效K呈显著负相关;纬度与有机质呈显著负相关。可为张掖地区板蓝根药材合理开发利用提供理论依据。
OBJECTIVE To detect, analyze and cluster the soil pH, organic matter, total N, total P, available P, total K, available K and their contents in different Indigowa species in Zhangye Prefecture for the industrialization development of Radix Isatidis in Zhangye Prefecture Soil factor based. Methods pH meter method, potassium dichromate volumetric method, Kjeldahl method, HClO4-H2SO4 method, 0.05mol / L NaHCO3 leaching method, NaOH melt-flame photometry and NH4OAc extraction- Organic matter, total N, total P, available P, total K, available K content were measured in turn, and then the data correlation and cluster analysis. Results The contents of soil factors were different in different plantation areas in Zhangye area, showing some differences. The content of organic matter and total K was 2.23% and 4.30% respectively. The variation of available P and available K was 55.37% And 57.43%, respectively. The minimum soil pH variation was only 3.57%. Conclusion The contents of soil factors in different areas of Banlangen were different in Zhangye area. The altitude and latitude and longitude had significant effects on the contents of soil organic matter. There was a significant positive correlation between altitude and organic matter and total N and negatively correlated with latitude; Negative correlation; latitude and organic matter was significantly negatively correlated. It can provide a theoretical basis for rational development and utilization of Radix isatidis in Zhangye area.