藜麦种植对内蒙古阴山北麓不同质地土壤团聚体稳定性及碳氮分布的影响OA北大核心
Effects of quinoa cultivation on soil aggregate stability and carbon and nitrogen distribution in different textures at the northern foot of Yinshan Mountain in Inner Mongolia
为探究藜麦种植对内蒙古阴山北麓地区不同质地土壤团聚体稳定性及碳氮分布的影响,本试验选取砂土、沙壤土、壤土和黏壤土4种不同质地土壤,测定种植蒙藜6号和蒙藜1537后土壤不同团聚体粒径质量百分比及各粒径的有机碳、全氮含量.土壤团聚体的稳定性采用平均质量直径(MWD)和几何平均直径(GMD)进行评价,MWD和GMD越大表明团聚体稳定性越大.结果显示:沙壤土和壤土种植蒙藜1537后土壤团聚体稳定性较播种前降低,其余处理均升高;种植蒙藜6号后黏壤土>2 mm粒径团聚体质量百分比最高,为27.95%,种植蒙藜1537后砂土＞2 mm粒径团聚体质量百分比最低,为12.66%,且种植蒙藜6号后>2 mm粒径团聚体质量占比提高效果最为显著;与播种前相比,砂土和黏壤土种植藜麦后各粒径土壤团聚体中有机碳和全氮含量分别提高0.45～3.09 g·kg-1和0.04～0.76 g·kg-1.研究表明,在4种质地土壤下种植蒙藜6号,在砂土和黏壤土种植蒙藜1537可增强土壤团聚体结构的稳定性,有利于阴山北麓地区农田土壤改良,减缓土地退化.
In order to investigate the effect of quinoa cultivation on the stability of soil aggregates and the distribution of carbon and nitrogen in different textures in the northern foothills of the Yinshan Mountains in Inner Mongolia,four different textures of sandy soil,sandy loam,loamy soil and clay loam were selected in this experiment,and the mass percentages of different soil aggregates particle sizes and the contents of organic carbon and total nitrogen of each particle size were determined after planting Mengli No.6 and Mengli No.1537.The stability of soil aggregates was evaluated by mean weight diameter(MWD)and geometric mean diameter(GMD),such that the larger the values of MWD and GMD,the greater the stability of aggregates.The results showed that soil aggregate stability decreased after planting Mengli 1537 in sandy loam and loamy soil compared with that before sowing,and increased in the rest of treatments;the highest mass percentage of>2 mm particle size aggregates was 27.95%in clay loam soil after planting Mengli No.6,and the lowest mass percentage of>2 mm particle size aggregates was 12.66%in sandy soil after planting Mengli 1537,and the effect of the increase in the mass percentage of>2 mm particle size aggregates was the most significant after planting Mengli No.6.Compared with before sowing,the content of organic carbon and total nitrogen in soil aggregates of various grain sizes increased by 0.45-3.09 g·kg-1 and 0.04-0.76 g·kg-1,respectively,after quinoa was planted in sandy soil and clay loam.The study showed that planting Mengli 6 in four types of soils,and Mengli 1537 in sandy soil and clay loam could enhance the stability of soil aggregate structure,which is conducive to farmland soil improvement and to slowing land degradation in the northern foothills of Yinshan Mountain.
吕舒宁;郭占斌;刘瑞香;王树彦
内蒙古农业大学沙漠治理学院,呼和浩特 010029内蒙古益稷生物科技有限公司,呼和浩特 010019||内蒙古蒙农藜麦产业研究院,呼和浩特 010010内蒙古农业大学沙漠治理学院,呼和浩特 010029||荒漠生态系统保护与修复国家林业和草原局重点实验室,呼和浩特 010029内蒙古蒙农藜麦产业研究院,呼和浩特 010010
农业科学
内蒙古阴山北麓土壤团聚体藜麦有机碳全氮
northern Yinshan Mountains of Inner Mongoliasoil aggregatequinoaorganic carbontotal nitrogen
《农业环境科学学报》 2025 (1)
85-94,10
呼和浩特市应用技术研究与开发资金项目(2022-农-5)中央引导地方科技发展资金项目(2022ZY0138)内蒙古自治区燕麦藜麦产业技术创新推广体系项目呼和浩特市应用技术研究与开发资金项目(2023-农-1) Hohhot Application Technology Research and Development Fund Project(2022-Agriculture-5)Central Leading Local Science and Technology Development Fund Project(2022ZY0138)Oat and Quinoa Industry Technology Innovation Promotion System in Inner Mongolia Autonomous RegionHohhot Application Technology Research and Development Fund Project(2023-Agriculture-1)
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