| 摘要: |
| 【目的】测定秦岭北麓猕猴桃园土壤养分含量，评价猕猴桃园肥力状况，为当地猕猴桃的合理施肥提供依据。【方法】以位于秦岭北麓的陕西省周至县余家河小流域为研究区域，在2012年10月下旬采集研究区88个猕猴桃园0～20及20～40 cm 土层土样，测定土壤pH、有机质、全氮、矿质氮、速效磷和速效钾含量，分析其土壤肥力状况。【结果】周至县余家河小流域0～20 及20～40 cm 土层土壤pH平均值分别为7.63和7.78，属弱碱性；土壤有机质平均含量分别为17.23和12.05 g/kg，全氮平均含量分别为1.19和0.81 g/kg，均处在中等偏下水平。0～20 与20～40 cm土层土壤矿质氮平均含量分别为17.64和21.68 mg/kg，均处于偏低水平；0～20及20～40 cm土层土壤速效磷平均含量分别为86.34和50.92 mg/kg，土壤速效钾平均含量分别为360.41和239.01 mg/kg，均处在偏高水平，有超过75%的猕猴桃园土壤速效磷、速效钾含量过高。【结论】建议当地猕猴桃园继续加强有机肥的使用，适当降低磷、钾肥施用量。 |
| 关键词: 秦岭北麓 猕猴桃园 土壤养分 土壤pH |
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| 基金项目:国家“十二五”科技支撑计划项目（2012BAD15B04）；高等学校学科创新引智计划项目(B12007） |
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| Soil nutrients status of kiwifruit orchards in the northern foothills of Qinling Mountains:A case study in Yujia River catchment of Zhouzhi county |
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KANG Ting-ting,ZHANG Xiao-jia,CHEN Zhu-jun,et al
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| Abstract: |
| 【Objective】The contents of soil nutrients in 88 kiwifruit orchards in the northern foothills of Qinling Mountains were analyzed and evaluated to provide scientific fertilization basis for kiwifruit.【Method】The soil samples at the soil layers of 0-20 and 20-40 cm were collected from 88 kiwifruit orchards from Yujia River basin in the northern foothills of Qinling Mountains,Zhouzhi,Shaanxi.Soil pH and the conditions of organic matter,total nitrogen,mineral nitrogen,available phosphorus and available potassium were determined and analyzed.【Result】The average soil pH values at the soil layers of 0-20 and 20-40 cm were 7.63 and 7.78,respectively,indicating weak alkaline soil.The average soil organic matter contents in soil layers of 0-20 and 20-40 cm were 17.23 and 12.05 g/kg,and the average soil total nitrogen contents were 1.19 and 0.81 g/kg,both at low levels.The average soil mineral nitrogen contents were also very low with contents of 17.64 and 21.68 mg/kg,respectively.In contrast,the average contents of soil available phosphorus (86.34 and 50.92 mg/kg) and available potassium (360.41 and 239.01 mg/kg) were extremely high with more than 75% in excessive range.【Conclusion】Local farmers are suggested to continue using different organic fertilizers and reduce application rates of phosphate and potassium. |
| Key words: northern foothills of Qinling Mountain kiwifruit orchard soil nutrients soil pH |
