摘要
采用主成分分析方法(PCA)和土壤养分综合分值(IFI)评价方法,对察隅农场沙琼村地块土壤的肥力状况和空间分布进行了分析评价。结果表明,研究区土壤全钾为弱变异性,而土壤有机质、全氮、全磷、硒、锗、钴、铜、锌、钒、硼、锰、钼、碘、氟均表现为中等变异性;土壤IFI变幅为36.42~104.76,平均值为58.61,变异系数为0.23,属于中等变异性,在空间上IFI高值区主要位于研究区西南角和东北角,中等及以上水平养分含量的面积占比约64.8%。
The soil fertility and spatial distribution of Chayu farm in shaqiong village were analyzed and evaluated by the principal component analysis and soil nutrient comprehensive score(IFI). The results showed that the soil total K in the study area was weakly variability,while the organic matter,total N,total P,Se,Ge,Co,Cu,Zn,V,B,Mn,Mo,I and F showed medium variability;The soil IFI is from 36.42 to 104.76 with the average value 58.61 and the coefficient of variation 0.23,which belongs to medium variability. Spatially,the high value area of IFI is mainly located in the southwest and northeast corners of the study area,and the area accounts of medium and above nutrient content is about 64.8%.
作者
刘刚承
李凯华
吴仁杰
郭忠文
刘治德
张杨
梗旦次仁
扎西平措
包继财
LIU Gangcheng;LI Kaihua;WU Renjie;GUO Zhongwen;LIU Zhide;ZHANG Yang;Gengdanciren;Zhaxipingcuo;BAO Jicai(Chayu farm Limited Company of Linzhi Agricultural Reclamation,Tibet Linzhi 860613,China;Shenzhen Institute of Quality&Safety Inspec-tion and Testing,Guangdong Shenzhen 518000,China;The Sixth Geological Brigade of Tibet Autonomous Region Geological and Mineral Explora-tion and Development Bureau,Tibet Lhasa 851400,China)
出处
《西藏农业科技》
2022年第4期17-21,共5页
Tibet Journal of Agricultural Sciences
基金
西藏自治区林芝市察隅农场广东省援藏资金项目(林财采-W-【2021】072号)。
关键词
土壤养分
主成分分析法
空间分布
综合评价
察隅农场
soil nutrients
principal component analysis(PCA)
spatial distribution
comprehensive evaluation
Chayu farm
