干旱区生态环境知识资源中心(Arid): 基于主成分-聚类分析评价不同轮作模式对土壤肥力的影响

Arid

	基于主成分-聚类分析评价不同轮作模式对土壤肥力的影响
其他题名	Evaluation of the Effects of Different Rotation Patterns on Soil Fertility Based on Principal Component-Cluster Analysis
	张成君; 康文娟; 张翠梅; 薛雨彤; 周彤; 刘畅; 肖海龙; 师尚礼
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2020
卷号	34 期号:1 页码:292-300
中文摘要	为探明我国西北半干旱区粮经饲不同轮作模式的土壤肥力效应,于2017年在宁夏自治区固原市原州区设置玉米-豌豆(C-Pe)、玉米-玉米(C-C)、2龄苜蓿(2A)、高粱-马铃薯(B-Po)、燕麦-玉米(O-C)、马铃薯-燕麦(Po-O)、豌豆-高粱(Pe-B)7种轮作处理模式,研究了不同粮草轮作模式土壤养分、酶活性及可培养微生物群落特征,并进行土壤肥力综合评价。结果表明:(1)不同轮作处理模式对土壤养分影响显著,与其他轮作模式相比,2A模式更有利于土壤养分的累积,而C-C模式增加了对养分的消耗,C-Pe和Po-O模式的有机质、全氮、速效氮、速效磷和速效钾含量高于B-Po和O-C模式,轮作处理对全钾含量影响较小。(2)不同轮作处理模式对土壤酶活性影响显著,2A模式较其他轮作模式显著增加了土壤脲酶和蔗糖酶活性(P<0.05),C-C模式土壤酶活性最低。O-C和Pe-B模式的蔗糖酶、脲酶和碱性磷酸酶活性高于B-Po模式。(3)不同轮作处理模式对土壤可培养微生物数量影响显著,且各轮作模式下土壤微生物数量以细菌占绝对优势,放线菌次之,真菌数量最少,并有明显的土层垂直分布规律,与其他轮作模式相比,2A、C-C和B-Po模式的细菌数量和微生物总数量显著下降(P<0.05),真菌数量显著增加(P<0.05),O-C模式的细菌数量和微生物总数量明显增加,真菌数量降低。(4)运用主成分分析-数值聚类方法对不同轮作模式下土壤养分、土壤酶活性、土壤微生物数量的15个指标进行土壤肥力综合评价,主成分分析提取的2个主成分累计贡献率达89.38%,第1主成分以土壤有机质、全氮、速效氮、全磷、速效磷、速效钾、蔗糖酶、脲酶和碱性磷酸酶贡献最大,达63.56%,第2主成分以细菌数量、真菌数量和微生物总数贡献最大,达25.82%,且各轮作模式在2个主成分上的综合得分排名为2A>Pe-B>CPe>O-C>Po-O>B-Po>C-C。再以2个主成分得分进行聚类,将7个模式共分为3类,第1类(2A)土壤综合肥力最好;第2类(Pe-B、O-C、C-Pe、Po-O、B-Po)土壤综合肥力较好;第3类(C-C)土壤综合肥力较差。研究结果为当地耕作方式改良提供理论依据和实践指导。
英文摘要	In order to understand the effect of soil fertility under different rotation patterns ofgrain,cash,and forage cropsin the semi-arid area of northwest China,seven rotation patterns,including corn-pea(CPe),corn-corn(C-C),2-year alfalfa(2A),broomcorn-potato(B-Po),oat-corn(O-C),potato-oat(Po-O),pea-broomcorn(Pe-B),were set up in Yuanzhou District,Guyuan City,Ningxia Autonomous Region in 2017.The Indicators including the soil nutrient,enzyme activity and characteristics of culturable microbial community under different grain rotation cropping patterns were measured.Meanwhile,the soil fertility was comprehensively evaluated,which provide theoretical basis and practical guidance for local farming improvement.The results showed:(1)Different rotation patterns had significant effects on soil chemical properties.Compared with other rotation models,2Awas more conducive to the accumulation of soil nutrients.However,C-C mode increased the consumption of nutrients.The organic matter,total nitrogen,available nitrogen,available phosphorus,and available potassium content of C-Pe and Pe-B modes were significant higher than those of B-Po and O-C modes,moreover,rotation treatment had less effect on total potassium content.(2)Different crop rotation patterns had significant effects on soil enzyme activities.The soil urease and sucrase activities of 2A mode were significantly higher than those of other rotation patterns(P<0.05).The soil enzyme activity in C-C mode was the lowest,and the sucrase,the urease,and the alkaline phosphatase activities of O-C and Pe-B modes were significant higher than those of B-Po mode.(3)Different crop rotation patterns had significant effects on the number of soil culturable microorganisms.In crop rotation patterns,the number of soil microorganisms was dominated by bacteria,followed by actinomycetes and fungi with obvious vertical distribution of soil layers.Compared with other rotation models,the number of bacteria and the total number of microorganisms in 2A,C-C,and B-Po models decreased significantly and the number of fungi increased significantly(P<0.05),which was opposite to OC mode.4)Principal component analysis-numerical clustering method was used to comprehensively evaluate the soil fertility of 15indicators of soil nutrient,soil enzyme activity,and soil microbial population under different rotation patterns.The results showed that the cumulative contribution rate of the two principal components extracted by principal component analysis was up to 89.38%.The first main component was composed of soil organic matter,total nitrogen,available nitrogen,total phosphorus,available phosphorus,available potassium,pH,sucrase,urease,and alkaline phosphatase,and the cumulative contribution rate was up to 63.56%.The second main component was composed of bacteria,fungi and microorganisms and cumulative contribution rate reached 25.82%.The overall score of each rotation pattern on the two principal components was ranked as 2A >Pe-B>C-Pe>O-C>Po-O >B-Po>C-C.The two principal component scores were further clustered,and seven models were divided into three categories:the first type(2A)had the best soil fertility;the second type(including Pe-B,O-C,C-Pe,Po-O,and B-Po modes)had better soil fertility;and the third type(C-C)had poor soil fertility.These research results may provide theoretical basis and practical guidance for the improvement of local farming methods.
中文关键词	轮作 ; 土壤养分 ; 土壤酶 ; 土壤微生物 ; 主成分分析 ; 聚类分析
英文关键词	crop rotation soil nutrient soil enzyme soil microorganism principal component analysis cluster analysis
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6708916
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336407
作者单位	张成君, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 康文娟, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 张翠梅, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 周彤, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 刘畅, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 肖海龙, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 师尚礼, 甘肃农业大学草业学院;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, ;;草业生态系统教育部重点实验室;;甘肃省草业工程实验室;;中-美草地畜牧业可持续研究中心, 兰州;;兰州, ;; 730070;;730070.; 薛雨彤, 甘肃农业大学人文学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	张成君,康文娟,张翠梅,等. 基于主成分-聚类分析评价不同轮作模式对土壤肥力的影响[J],2020,34(1):292-300.
APA	张成君.,康文娟.,张翠梅.,薛雨彤.,周彤.,...&师尚礼.(2020).基于主成分-聚类分析评价不同轮作模式对土壤肥力的影响.水土保持学报,34(1),292-300.
MLA	张成君,et al."基于主成分-聚类分析评价不同轮作模式对土壤肥力的影响".水土保持学报 34.1(2020):292-300.