首页|赣江上游畜禽粪污土地承载力及氮磷肥理论替代潜力分析

赣江上游畜禽粪污土地承载力及氮磷肥理论替代潜力分析

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为农牧业实行种养平衡的发展模式提供相关理论依据及数据支持,基于赣江上游地区2009-2019年农牧业数据,依据《畜禽粪污土地承载力测算技术指南》计算、分析畜禽粪肥氮磷养分供给量、需求量,畜禽粪污土地承载力指数以及氮磷肥理论替代潜力.结果表明:(1)从时间上看,赣江上游畜禽粪肥氮磷养分供给量、需求量及畜禽粪污土地承载力指数均不高,总体都呈先增后减的变动趋势,理论替代潜力除部分地区外均有所上升.(2)从空间上看,养分供给量整体不高,中部大于四周;养分需求量区域差距较大,中部及北部较高、西南较低;土地承载力指数南部部分地区较高;理论替代潜力普遍较高.总体而言,赣江上游各地区畜禽粪污压力较小,但仍存在一定风险,要加强管控.理论替代潜力较大,要加大力度宣传种养平衡的生产理念,支持种养结合农业的发展.
Analysis of the Land Carrying Capacity of Livestock and Poultry Manure and the Theoretical Substitution Potential of Nitrogen and Phosphorus Fertilizers in the Upper Reaches of the Ganjiang River
This study provides relevant theoretical foundations and data support for the development model of balanced crop-livestock production in agriculture and animal husbandry.Based on agricultural data from the upper regions of the Gan River from 2009 to 2019,the supply and demand of nitrogen and phosphorus nutrients from livestock and poultry manure,the land carrying capacity index for livestock and poultry waste,and the theoretical substitution potential for nitrogen and phosphorus fertilizers were calcu-lated and analyzed according to the"Technical Guidelines for Calculating the Land Carrying Capacity of Livestock and Poultry Manure."The results indicate that:(1)Temporally,the supply and demand of ni-trogen and phosphorus nutrients from livestock and poultry manure,as well as the land carrying capacity index for livestock and poultry waste in the upper Gan River region,are generally low,with an overall trend of first increasing and then decreasing.The theoretical substitution potential has increased in most areas,with some exceptions.(2)Spatially,the overall nutrient supply is low,with the central region be-ing greater than the surrounding areas;the nutrient demand shows significant regional disparities,being higher in the central and northern regions and lower in the southwestern region.The land carrying capacity index is relatively high in certain areas of the south,while the theoretical substitution potential is generally high.Overall,the pressure from livestock and poultry waste in the upper Gan River region is relatively low,but there are still certain risks that require enhanced management.The theoretical substitution poten-tial is significant,indicating a need to strengthen efforts in promoting the concept of balanced crop-live-stock production and supporting the development of integrated crop-livestock agriculture.

livestock manureland carrying capacitybalanced planting and breedingnitrogen and phosphorus fertilizer

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东华理工大学地球科学学院,江西南昌 330013

东华理工大学江西省数字国土重点实验室,江西南昌 330013

畜禽粪污 土地承载力 种养平衡 氮磷肥

2024

家畜生态学报
西北农林科技大学

家畜生态学报

CSTPCD北大核心
影响因子:0.635
ISSN:1673-1182
年,卷(期):2024.45(11)