基于主成分—聚类分析的褐土肥力质量评价  

Fertility quality evaluation of cinnamon soil based on principal component-cluster analysis

作　　者：刘志平 张鹏飞 周怀平 解文艳 杨振兴 马晓楠 胡雪纯 LIU Zhi-ping;ZHANG Peng-fei;ZHOU Huai-ping;XIE Wen-yan;YANG Zhen-xing;MA Xiao-nan;HU Xue-chun(College of Resources and Environment,Shanxi Agricultural University,State Key Laboratory of Integrative Sustainable Dryland Agriculture(in preparation),Taiyuan Shanxi 030031)

机构地区：[1]山西农业大学资源环境学院,省部共建有机旱作农业国家重点实验室(筹),山西太原030031

出　　处：《中国土壤与肥料》2022年第11期167-173,共7页Soil and Fertilizer Sciences in China

基　　金：山西农业大学省部共建有机旱作农业国家重点实验室自主研发项目(202001-7);国家科技基础资源调查专项课题(2021FY005d-1);山西省青年科技研究基金(201901D211557);山西省农业科学院博士研究基金(YBSJJ2012)。

摘　　要：以山西省寿阳县国家褐土长期定位试验基地为研究平台,定量评价不同施肥措施对土壤肥力质量的影响,为建立褐土区合理施肥模式和土壤肥力质量评价体系提供科学依据。通过主成分—聚类分析,综合评价了长期不同培肥措施的土壤肥力质量差异。结果表明,长期不同施肥处理的玉米产量与土壤全氮、全磷、碱解氮、有效磷、有机质、酶活性均表现出极显著正相关,与p H呈极显著负相关。土壤肥力质量排序为:N_(3)P_(2)M_(3)>M_(6)>N_(4)P_(2)M_(2)>N_(2)P_(1)M1>N_(4)P_(4)>N_(2)P_(2)>N_(3)P_(3)>N_(1)P_(1)>CK。不同培肥措施的土壤肥力可聚为3类:N_(3)P_(2)M_(3)、M_(6)、N_(4)P_(2)M_(2)和N_(2)P_(1)M1聚为一类,土壤肥力质量为第一等;N_(2)P_(2)、N_(3)P_(3)、N_(1)P_(1)和N_(4)P_(4)聚为一类,土壤肥力质量为第二等;CK单独成一类,土壤肥力质量为第三等。因此,有机无机配施既可以保障作物的生长,又可以稳步提升土壤肥力,实现农业的可持续发展。In order to provide scientific basis for the establishment of rational fertilization mode and soil fertility quality evaluation system in the cinnamon soil area,the effects of different fertilization measures on soil fertility quality were quantitatively evaluated based on the national cinnamon soil long-term location test in Shouyang county,Shanxi province.Principal component-cluster analysis was adopted to comprehensively evaluate the differences of soil fertility quality under different long-term fertilization.The results showed that maize yield under different long-term fertilization treatments was significantly positively correlated with soil total nitrogen,total phosphorus,alkali-hydrolyzale nitrogen,available phosphorus,organic matter and enzyme activity,while negatively correlated with p H.The order of soil fertility quality was:N_(3)P_(2)M_(3)>M_(6)>N_(4)P_(2)M_(2)>N_(2)P_(1)M1>N_(4)P_(4)>N_(2)P_(2)>N_(3)P_(3)>N_(1)P_(1)>CK.The soil fertility of different fertilization measures could be divided into three grades:N_(3)P_(2)M_(3),M_(6),N_(4)P_(2)M_(2)and N_(2)P_(1)M1were grouped to the first class of the soil fertility quality;N_(2)P_(2),N_(3)P_(3),N_(1)P_(1)and N_(4)P_(4)were grouped to the second class of the soil fertility quality;CK alone belonged to the third class of the soil fertility quality.Therefore,the combination of organic and inorganic application can not only guarantee the growth of crops,but also steadily improve soil fertility,and achieve sustainable development of agriculture.

关 键 词：褐土 肥力质量 主成分 聚类分析 

分 类 号：S158.2[农业科学—土壤学]