【摘要】 为了对中宁枸杞进行科学合理地施肥,分别利用MATLAB和ArcGIS对中宁不同树龄枸杞园土壤有效钾含量变化和空间分布情况进行了研究。从统计学角度看,中宁枸杞园土壤有效钾平均含量达262.38 mg/kg,1~5年树龄和10年以上树龄枸杞园土壤有效钾平均含量均超过250 mg/kg,肥力非常丰富;而6~9年树龄枸杞园有效钾平均含量为151 mg/kg,变异较小,肥力刚达到较丰富水平。通过地统计学Kriging插值分析可以直观准确地了解中宁不同树龄枸杞园土壤有效钾空间分布情况,红柳沟和舟塔镇1~5年树龄枸杞园土壤有效钾含量均大于200 mg/kg,肥力丰富,近期不需增施钾肥。但舟塔镇1~5年树龄和10年以上树龄枸杞园土壤有效钾等级分布情况比较复杂,在以后施肥时应根据具体情况施肥。宁安镇1~5年树龄枸杞园有大面积土壤有效钾含量小于200 mg/kg,近期需增施钾肥;6~9年树龄枸杞园土壤有效钾累积较少,需增施少量钾肥。更多还原

【Abstract】 In order to carry out a scientific and effective fertilization, a study was conducted on the change and the spatial distribution of soil available potassium content in Lycium barbarum gardens by using MATLAB and ArcGIS. From a statistical point of view, the average content of soil available potassium reached 262.38 mg/kg, and that of soil available potassium in 1~5 year-old and above 10 year-old Lycium barbarum gardens were all more than 250 mg/kg, and the fertility was very rich. However, the average content of 6~9 year-old Lycium barbarum gardens was 151 mg/kg with small variation, reaching a relatively rich fertility. Geostatistical Kriging interpolation analysis can offer accurate and intuitive understanding of soil available potassium spatial distribution of different age’s Lycium barbarum gardens in Zhongning. The soil available potassium content of 1~5 year-old Lycium barbarum gardens in Hongliugou and Zhouta township were both above 200 mg/kg, the fertility was rich, indicating no need to apply potash fertilizer at present. Grade distribution of soil available potassium of 1~5 year-old and above 10 year-old Lycium barbarum gardens in Zhouta township was more complex, fertilization should be conducted based on the specific circumstances of soil fertility in the future. The soil available potassium content of 1~5year-old Lycium barbarum gardens in Ning’an township was below 200 mg/kg, thus it was necessary to increase the application of potash fertilizer. The soil available potassium accumulation of 6~9 year-old Lycium barbarum gardens was less, indicating that small amount of potassium fertilizer was needed.更多还原