Spatial Variations and Influencing Factors of Soil Micronutrients in Coastal Mild Saline-alkali Alfalfa (Medicago sativa) Planting Area

doi:10.11733/j.issn.1007-0435.2024.09.011

Acta Agrestia Sinica ›› 2024, Vol. 32 ›› Issue (9): 2777-2783.DOI: 10.11733/j.issn.1007-0435.2024.09.011

Spatial Variations and Influencing Factors of Soil Micronutrients in Coastal Mild Saline-alkali Alfalfa (Medicago sativa) Planting Area

TAN Qi-qi¹, LIU Li-bo¹, LIU Lei¹, LIU Zhen-yu², LIU Zhong-kuan², HUANG Ding¹

1. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
2. Institute of Agricultural Resources and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, Hebei Province 050051, China

Received:2024-01-04 Revised:2024-04-21 Published:2024-10-09

滨海轻度盐碱苜蓿种植地土壤微量元素空间变化特征及其影响因子分析

谭琦亓¹, 刘礼博¹, 刘蕾¹, 刘振宇², 刘忠宽², 黄顶¹

1. 中国农业大学草业科学与技术学院, 北京 100093;
2. 河北省农林科学院农业资源环境研究所, 河北石家庄 050051

通讯作者: 谭琦亓,E-mail:cautanqiqi133@cau.edu.cn;黄顶,E-mail:huangding@263.net
作者简介:谭琦亓(1991-),男,土家族,湖北建始人,博士,副教授,主要从事草地资源管理与生态保护研究,E-mail:cautanqiqi133@cau.edu.cn
基金资助:
财政部和农业农村部：国家现代农业产业技术体系(CARS-34);国家自然科学基金项目(32301498)资助

Abstract

Abstract: To explore the spatial variations and influencing factors of soil micronutrients in coastal saline-alkali alfalfa (Medicago sativa) planting area,this study collected soil samples of different depths in coastal mild saline-alkali alfalfa field in Hebei Province. We analyzed the changes in soil micronutrient contents and soil properties and the relationships between them. The results showed that the contents of soil available Fe,Mn,Cu and Zn in 0-10 cm soil layer were 11.4,21.8,1.3 and 1.5 mg·kg^-1. Soil available Fe,Mn,Cu and Zn contents decreased with increased soil depth. Soil pH value increased with the increase in soil depth,whereas soil organic matter content,soil clay content and soil silt content decreased with increased soil depth. Soil available Fe,Mn,Cu and Zn contents were negatively correlated with soil pH value,and they were positively correlated with soil organic matter content,soil clay content and soil silt content. The variations of soil micronutrients in coastal mild saline-alkali alfalfa field were jointly controlled by soil organic matter content,soil clay content and soil silt content.

Key words: Coastal saline-alkali soil, Alfalfa, Micronutrient, Soil layer

摘要： 为探究滨海盐碱苜蓿(Medicago sativa)种植地土壤微量元素空间变化特征及其影响因子，本研究采集河北滨海轻度盐碱苜蓿种植地不同深度土壤样品，分析土壤微量元素含量和土壤性状的变化规律以及二者之间的关系。结果表明：0～10 cm土层的土壤有效态铁、锰、铜、锌含量分别为11.4，21.8，1.3和1.5 mg·kg^-1。土壤有效态铁、锰、铜、锌含量均随土壤深度的增加而减小。土壤pH值随土壤深度的增加而增加，土壤有机质含量、土壤粘粒含量和土壤粉粒含量均随土壤深度的增加而减小。土壤有效态铁、锰、铜、锌含量与土壤pH值负相关，与土壤有机质含量、土壤粘粒含量和土壤粉粒含量正相关。滨海轻度盐碱苜蓿种植地土壤微量元素变化受到土壤有机质含量、土壤粘粒含量和土壤粉粒含量的共同作用。

关键词: 滨海盐碱地, 苜蓿, 微量元素, 土层

CLC Number:

S153.6

TAN Qi-qi, LIU Li-bo, LIU Lei, LIU Zhen-yu, LIU Zhong-kuan, HUANG Ding. Spatial Variations and Influencing Factors of Soil Micronutrients in Coastal Mild Saline-alkali Alfalfa (Medicago sativa) Planting Area[J]. Acta Agrestia Sinica, 2024, 32(9): 2777-2783.

谭琦亓, 刘礼博, 刘蕾, 刘振宇, 刘忠宽, 黄顶. 滨海轻度盐碱苜蓿种植地土壤微量元素空间变化特征及其影响因子分析[J]. 草地学报, 2024, 32(9): 2777-2783.

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Spatial Variations and Influencing Factors of Soil Micronutrients in Coastal Mild Saline-alkali Alfalfa (Medicago sativa) Planting Area

滨海轻度盐碱苜蓿种植地土壤微量元素空间变化特征及其影响因子分析

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