草地学报

草地学报 ›› 2025, Vol. 33 ›› Issue (12): 4023-4032.DOI: 10.11733/j.issn.1007-0435.2025.12.015

• 研究论文 • 上一篇    

不同改良剂对盐渍土壤养分及盐分离子含量的影响

焦龙光1, 郭全恩2, 曹诗瑜2, 南丽丽1, 陈静茹1, 傅俊士1, 任孟雨1, 陈娜1, 郭佳雨1   

  1. 1. 甘肃农业大学草业学院/草业生态系统教育部重点实验室/农业农村部饲草种质与新品种选育重点实验室, 甘肃 兰州 730070;
    2. 甘肃省农业科学院土壤肥料与节水农业研究所, 甘肃 兰州 730070
  • 收稿日期:2025-03-07 修回日期:2025-05-09 发布日期:2025-12-01
  • 通讯作者: 南丽丽，E-mail：nanll@gsau.edu.cn
  • 作者简介:焦龙光（1999-），男，汉族，安徽亳州人，硕士研究生，主要从事牧草栽培与育种研究，E-mail：2923831518@qq.com；
  • 基金资助:
    甘肃省重大专项（25ZDNA005）；财政部和农业农村部：国家现代农业产业技术体系（CARS-34）共同资助

Effects of Different Improvement Measures on Nutrient and Salt Content of Saline Soil

JIAO Long-guang1, GUO Quan-en2, CAO Shi-yu2, NAN Li-li1, CHEN Jing-ru1, FU Jun-shi1, REN Meng-yu1, CHEN Na1, GUO Jia-yu1   

  1. 1. College of Pratacultural Science, Gansu Agricultural University/Key Laboratory of Grassland Ecosystem, Ministry of Education/Key Laboratory of Forage Germplasm Innovation and New Variety Breeding of Ministry of Agriculture and Rural Affairs, Lanzhou, Gansu Province 730070, China;
    2. Institute of Soil Fertilizer and Water Saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzbou, Gansu Province 730070, China
  • Received:2025-03-07 Revised:2025-05-09 Published:2025-12-01

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摘要： 为评估不同措施对盐渍化土壤的改良效果，本研究以饲用玉米地不施肥（CK）、施有机肥2.1×104 kg·hm-2（T1）、有机肥2.1×104 kg·hm-2+磷酸脲1500 kg·hm-2（T2）、有机肥2.1×104 kg·hm-2+秸秆4500 kg·hm-2（T3）、有机肥2.1×104 kg·hm-2+秸秆4500 kg·hm-2+磷酸脲1500 kg·hm-2（T4）为研究对象，对不同土层土壤理化性质、盐分离子和有机碳组分进行了研究。结果表明：不同月份间，各处理土壤可溶性Na+，Cl-，SO42-和全盐含量均表现为6月>8月>10月；AN、AP、SOM、易氧化有机碳（ROC）和惰性碳（NLC）含量均表现为6月>10月>8月；K+和Mg2+含量均表现为8月>10月>6月；Ca2+含量表现为6月>10月>8月；AK含量表现为10月>8月>6月。4种处理下，K+，Mg2+，AN，AP，AK，SOM，ROC和NLC含量在不同月份的均值均高于CK，其中T4处理各指标较CK分别增加了83.33%，12.03%，86.38%，352.93%，33.04%，61.07%，61.07%和28.87%；而Na+，Cl-，SO42-和全盐含量均值均小于CK，其中T4处理各指标较CK分别降低了55.21%，30.23%和80.82%。综合评价表明，不同改良措施对盐渍化土壤的改良效果表现为T4>T2>T3>T1>CK。

关键词: 盐渍土壤, 河西走廊, 惰性碳, 盐分离子, 易氧化有机碳

Abstract: In order to evaluate the effectiveness of different measures on improving saline-alkali soil， the research utilized the following treatments： no fertilization （CK）， 2.1×104 kg·hm2 of organic fertilizer （T1）， 2.1×104 kg-hm-2 of organic fertilizer combined with 1500 kg·hm-2 of urea phosphate （T2）， 2.1×104kg·hm2 of organic fertilizer combined with 4500 kg·hm-2 of straw （T3）， and 2.1×104kg·hm2 of organic fertilizer combined with 4500 kg·hm2 of straw and 1500 kg·hm-2 of urea phosphate （T4）. These treatments were employed to investigate the physical and chemical properties of the soil， as well as the salt ions and organic carbon components across various soil layers. The results indicated that the amounts of total salt， Cl-， SO42-， and soil exchangeable Na+ in various months followed this order： June>August>October. The contents of SOM， readily oxidized organic carbon （ROC）， soil non-labile carbon （NLC）， AN， and AP were ranked as follows： June>October>August. The contents of K+ and Mg2+ were in this order： August>October>June. For Ca2+， the order was June>October>August， whereas for AK， the ranking was October>August>June. Under four different treatments， the average contents of K+， Mg2+， AN， AP， AK， SOM， ROC， and NLC in different months were higher than those in CK. Among them， the T4 treatment increased each index by 83.33%， 12.03%， 86.38%， 352.93%， 33.04%， 61.07%， 61.07%， and 28.87% compared to CK， respectively， whereas the average contents of Na+， Cl-， SO42-， and total salt were lower than those of CK， with T4 treatment showing a decrease of 55.21%， 30.23%， and 80.82% in various indicators compared to CK， respectively. The comprehensive evaluation showed that the improvement effect of different improvement measures on salinized soil was T4>T2>T3>T1>CK.

Key words: Saline soil, Hexi Corridor, Inert carbon, Salt ions, Easily oxidizable organic carbon

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