种植苜蓿对陕北矿区盐碱地改良作用的研究

付 咪; 卜耀军; 杨 斌; 孙利鹏\+1; 3

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种植苜蓿对陕北矿区盐碱地改良作用的研究

Improvement Effect of Alfalfa Cultivation on Saline alkali Land in Mining Area of Northern Shaanxi

DOI：

中文关键词: 生物有机肥盐碱地紫花苜蓿土壤理化性质

英文关键词:Bio-organic fertilizer Saline land Alfalfa Physical and chemical properties of soil

基金项目:榆林市科协青年人才托举计划项目：矿区盐碱地施用有机肥和种植苜蓿对土壤肥力的影响（20230504）；陕西省科技资源开放共享平台项目：陕北饲草全产业链综合性检验检测平台（2024CX-GXPT-31）；陕西省秦创原"科学家+工程师"队伍建设项目：榆林特色高蛋白饲草产业提质增效"科学家+工程师"队伍（2024QCY-KXJ-101）。

作者	单位
付咪, 卜耀军,杨斌, 孙利鹏\+1,3,	(1.榆林学院生命科学学院,陕西榆林 719000；2.陕西省黄土高原饲用植物工程技术研究中心,陕西榆林 719000；3.陕西省陕北矿区生态修复重点实验室,陕西榆林 719000）

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中文摘要:

为实现陕北矿区盐碱地土地资源化利用，改良盐碱地土壤问题，以紫花苜蓿为指示作物，通过盆栽试验，研究不同配比施肥下种植苜蓿对盐碱土壤理化性状的影响，以期为种植苜蓿改良盐碱地提供一定理论支撑。试验设计6个处理：不施肥对照组（CK）、100%化肥（Et-1）、75%的化肥+25%的生物有机肥（Et-2）、50%的化肥+50%的生物有机肥（Et-3）、25%的化肥+75%的生物有机肥（Et-4）、纯生物有机肥（Et-5）。盆栽试验结果表明：（1）种植紫花苜蓿并施肥处理相对于对照组的土壤理化性质差异显著，Et-1、Et-2、Et-3、Et-4、Et-5与对照组CK相比试验地的土壤容重分别降低了5.86%、4.10%、8.84%、0.57%和6.21%，土壤含水率与对照组相比分别提高21.43%、35.71%、64.29%、60.71%和57.14%。土壤的pH分别降低4.39%、3.88%、3.74%、5.70%、6.68%。（2）种植紫花苜蓿能有效地提升土壤有机质含量和土壤养分含量，在对照组CK中，相比8月份、9月份和10月份的土壤有机质含量分别提升了29.92%和64.9%。

英文摘要:

To promote the utilization of saline alkali land resources and improve the saline alkali soil in the mining area of northern Shaanxi Province, a pot experiment was conducted to investigate the effects of alfalfa cultivation under different ratios of fertilization on the soil's physicochemical properties.The study aims to provide theoretical support for improving saline alkali soils through alfalfa planting. Six treatments were designed: no fertilizer (CK), 100% chemical fertilizer (Et-1), 75% chemical fertilizer + 25% bio-organic fertilizer (Et-2), 50% chemical fertilizer + 50% bio-organic fertilizer (Et-3), 25% chemical fertilizer + 75% bio-organic fertilizer (Et-4), and 100% bio-organic fertilizer (Et-5). The results of the pot experiment were as follows: (1) The physicochemical properties of soils with alfalfa planting and fertilization differed significantly from those of the control group. Compared with the CK group, the soil bulk density in Et-1, Et-2, Et-3, Et-4, and Et-5 decreased by 5.86%, 4.10%, 8.84%, 0.57%, and 6.21%, respectively. Soil moisture content increased by 21.43%, 35.71%, 64.29%, 60.71%, and 57.14%, respectively, and soil pH decreased by 4.39%, 3.88%, 3.74%, 5.70%, and 6.68%, respectively. (2) Planting alfalfa effectively increased soil organic matter and nutrient content. Compared with the CK group, the soil organic matter content in the treatment groups increased by 29.92%, 46.12%, and 64.90% in August, September, and October, respectively.

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