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| 黄土丘陵沟壑区县域作物秸秆-养殖饲料-农田有机肥纽带关系 |
| Linkage between crop straw，livestock feed and farmland organic fertilizer at the county level in the loess hilly and gully region |
| Received:May 23, 2025 |
| DOI：10.13254/j.jare.2025.0480 |
| 中文关键词: 秸秆;养殖饲料;农田有机肥;种养结合;黄土丘陵沟壑区 |
| 英文关键词: straw;breeding feed;farmland organic fertilizer;combination of planting and breeding;loess hilly and gully region |
| 基金项目:国家自然科学基金面上项目（42271275） |
| Author Name | Affiliation | E-mail | | YIN Lixiang | College of Geography and Planning, Chengdu University of Technology, Chengdu 610059, China | | | WANG Yongsheng | State Key Laboratory of Efficient Utilization of Arable Land in China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | wangys@igsnrr.ac.cn | | LONG Pei | College of Geography and Planning, Chengdu University of Technology, Chengdu 610059, China | | | ZENG Yuanyuan | College of Geography and Planning, Chengdu University of Technology, Chengdu 610059, China | |
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| 中文摘要: |
| 在农业绿色发展及乡村振兴背景下，种养循环农业对促进农牧业协同发展具有重要意义。本研究以黄土丘陵沟壑区县域为对象，分析作物秸秆-养殖饲料-农田有机肥纽带的时空演化特征及种养结合循环农业发展策略。结果表明，2002—2022年，黄土丘陵沟壑区县域秸秆饲料化供应量与需求量均呈显著增长的趋势，空间上呈现西北部供不应求、东南部供过于求的错配格局，供需增长速率不匹配，约有73%的县域未实现供需有效匹配。牲畜粪便肥料当量与农作物氮肥需求量在空间上呈现西北部粪多肥少、东南部粪少肥缺的供需矛盾，养殖粪污氮素养分仅能满足33.36%的农田需求，约有88%的县域主要依赖外部投入。针对黄土丘陵沟壑区主要农作物秸秆跨区域流通效率低、本地转化能力不足、有机肥替代潜力不足与缺口并存的突出问题，建议通过区域协同秸秆供应链和粪肥时空差异化配置等途径，结合秸秆回收与有机肥生产补贴等政策，优化区域种养循环农业格局。 |
| 英文摘要: |
| In the context of agricultural green development and rural revitalization, integrated crop-livestock farming plays a pivotal role in promoting the coordinated advancement of agriculture and animal husbandry. The study focused counties in the loess hilly and gully region, explored the spatiotemporal evolution characteristics of the crop straw-livestock feed-farmland organic fertilizer linkage. Furthermore, it developed strategies for integrated crop-livestock farming. The findings revealed that from 2002 to 2022, there was a marked increase in both supply and demand for crop straw as feed in the loess hilly and gully region counties. A disparity between supply and demand was evident geographically, with the northwest region encountering a shortage and the southeast region experiencing an oversupply. The mismatch between supply and demand growth rates was evident, with approximately 73% of counties failing to attain effective supplydemand matching. The demand for livestock manure fertilizer equivalents and crop nitrogen fertilizer exhibited a spatial mismatch, characterized by an excess of manure in the northwest and an insufficiency of both manure and fertilizer in the southeast. It had been determined that nitrogen nutrients from livestock manure could only meet 33.36% of farmland demand, with approximately 88% of counties primarily relying on external inputs. In addressing the salient issues of low cross-regional circulation efficiency of crop straw, insufficient local conversion capacity, and coexisting potential and gaps in organic fertilizer substitution in the Loess Plateau hilly and gully region, it is recommended to optimize the regional crop-livestock cycle agricultural structure through measures such as regional collaborative straw supply chains and spatiotemporal differentiated allocation of manure fertilizers, combined with policies such as subsidies for straw recovery and organic fertilizer production. |
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