| 引用本文: | 周文宇,杨小虎,杨海昌,等.基于最小数据集的典型绿洲农田土壤质量评价[J].灌溉排水学报,0,():-. |
| ZHOU Wen-yu,YANG Xiao-hu,YANG Hai-chang,et al.基于最小数据集的典型绿洲农田土壤质量评价[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 以新疆莫索湾灌区农田为研究对象，测定其土壤有机质、速效磷、速效钾、碱解氮、pH、EC、K+、Ca2+、Na+、Mg2+、Cl-、NO3-、SO42-共13项指标，对该地区采用主成分分析法和聚类分析法分别构建最小数据集用土壤综合质量指数法进行综合评价，并比较主成分分析法和聚类分析法得出的结果与莫索湾土壤实际条件的符合程度。结果表明：莫索湾灌区农田有机质含量较少，碱解氮、速效磷和速效钾均较为丰富但分布不均匀。盐分空间分布差异大，土壤盐碱化程度高。大部分土壤质量水平处于中等偏下且土壤质量差异性比较大。研究中主成分分析法所得的评价结果更为符合莫索湾土壤实际条件，更加合理。新疆莫索湾灌区土壤质量总体较差，采用不同构建方法对其进行评价，主成分分析法最合理，聚类分析法次之。 |
| 关键词: 绿洲农田；土壤质量评价；主成分分析法；聚类分析法；比较 |
| DOI： |
| 分类号:X825 |
| 基金项目:国家自然科学(4216070089)；兵团科技攻关项目(2019AB038)；石河子大学青年创新人才计划项目(CXPY201910)；石河子大学科研项目(ZZZC201918A) |
|
| Evaluation of farmland soil quality in Typical Oasis Based on minimum data set |
|
ZHOU Wen-yu, YANG Xiao-hu, YANG Hai-chang, ZHANG Feng-hua
|
|
Shihezi University
|
| Abstract: |
| Taking the farmland in Mosuowan irrigation area in Xinjiang as the research object, 13 indexes of soil organic matter, available phosphorus, available potassium, alkaline hydrolysis nitrogen, pH, EC, K+, Ca2+, Na+, Mg2+, Cl-, NO3-, SO42- were measured. The principal component analysis method and cluster analysis method were used to construct the minimum data set, and the soil comprehensive quality index method was used for comprehensive evaluation, the results of principal component analysis and cluster analysis were compared with the actual soil conditions in Mosuowan. The results show that: the content of organic matter in the farmland of Mosuowan irrigation area is less, and the alkaline hydrolysis nitrogen, available phosphorus and available potassium are abundant, but the distribution is uneven. The spatial distribution of salt is different, and the degree of soil salinization is high. Most of the soil quality levels are in the lower middle and the differences of soil quality are relatively large. The evaluation results obtained by the principal component analysis method in the study are more in line with the actual soil conditions of Mosuowan and more reasonable. The soil quality of Mosuowan irrigation area in Xinjiang is generally poor, and different construction methods are used to evaluate it. The principal component analysis method is the most reasonable, followed by cluster analysis method. |
| Key words: oasis farmland; soil quality assessment; principal component analysis; cluster analysis; compare |
