农业资源与环境学报2025，Vol.42Issue(6)：1603-1611,9.DOI:10.13254/j.jare.2025.0480
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
摘要
Abstract
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 supply-demand 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.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Key words
straw/breeding feed/farmland organic fertilizer/combination of planting and breeding/loess hilly and gully region分类
管理科学引用本文复制引用
尹立湘,王永生,龙佩,曾圆圆..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[J].农业资源与环境学报,2025,42(6):1603-1611,9.基金项目
国家自然科学基金面上项目(42271275) National Natural Science Foundation of China General Program(42271275) （42271275）
