数字农科院2.0

基于土地承载潜力的养殖总量控制研究:以江苏省东海县为例

文献类型: 中文期刊

关键词: 畜禽粪便;;畜禽土地承载潜力;;氮平衡

期刊名称:中国畜牧杂志

ISSN: 0258-7033

年卷期: 2018 年 54 卷 4 期

页码:

收录情况: 北大核心

摘要: 为确定江苏省连云港市东海县畜禽适宜养殖量,本研究基于氮平衡分析畜禽土地承载力。结果表明: 2015 年,东海县全年农作物氮养分需求量、猪粪氮当量、化肥施用量(以氮计)分别为4.39 万、2.52 万、 4.44 万t,可见东海县具有足够的畜禽粪污消纳能力和较大的降低化肥施用潜力。以氮养分计,东海县畜禽养 殖承载潜力为199 万头猪当量,还有77 万头猪当量的盈余。不同乡镇存在较大差异,山左口、双店、石梁河 等3 个乡镇稍有超载,应适当调减养殖量;牛山街道和石榴街道2 个乡镇靠近城区,禁养区、限养区面积较大, 应逐步减少养殖量;黄川、桃林、安峰、白塔埠等4 个乡镇尚有一定的发展空间,可维持现有养殖量或适当 扩大养殖量;其余乡镇发展潜力较大,东海县畜禽养殖应逐步由养殖密集区域向这些乡镇转移。

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