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
文献类型: 中文期刊
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
期刊名称:农业资源与环境学报
ISSN: 2095-6819
年卷期: 2025 年
页码:
收录情况: 北大核心(2023版) ; ; CSCD(2025-2026年度) ; ; 科技核心(2024版) ; ; 农林核心(2024版)
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。
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