摘要
为指导江西省不同地市的化肥减施增效行动,结合《江西统计年鉴》分析了2012—2014年江西省不同地市的年均化肥用量,并量化了化肥用量与农业产值的相关关系。结果表明,在江西省范围内,氮、磷、钾肥年均用量大体呈现出赣州和宜春明显高于其他城市。同时,氮、磷、钾肥均呈现出南昌、九江、赣州、吉安、宜春、抚州和上饶在全省占比较高,其氮、磷、钾肥在全省的累计占比分别为90.09%、88.77%和91.29%。进一步分析表明,当氮、磷、钾肥的用量增加1万t/年,农业产值可以提升41.38亿~72.59亿元/年。且磷、钾肥与农业产量的拟合方程斜率明显高于氮肥。因此,在后续的化肥减施行动中,江西省应重点关注赣州和宜春的科学施肥问题,尤其是磷、钾肥对农业产值的贡献。
Aiming to guide the actions of reducing chemical fertilizer rate and increasing efficiency in different cities of Jiangxi province,the annual amount of chemical fertilizer in different cities was analyzed from 2012 to 2014 based on“Jiangxi statistical yearbooks”,and the correlation between chemical fertilizer rate and agricultural output were quantified.The results showed that,the annual amounts of nitrogen,phosphorus and potassium fertilizers in Ganzhou and Yichun were higher than other cities of Jiangxi province.Meanwhile,the proportion of Nanchang,Jiujiang,Ganzhou,Ji’an,Yichun,Fuzhou,and Shangrao cities for nitrogen,phosphorus and potassium chemical were more than others,and the cumulative proportions of nitrogen,phosphorus and potassium fertilizers in Jiangxi province were 90.09%,88.77% and 91.29%,respectively.Further analysis showed that the agricultural output could be increased by 4.138 billion to 7.259 billion yuan per year,when the amount of nitrogen,phosphorus,and potassium fertilizer was increased by 10000 per year.Otherwise,phosphorus and potassium fertilizers were obvious higher than that of nitrogen fertilizer,through the slope of the fitting equations between the chemical fertilizer and the agricultural output.Therefore,in the follow-up action of reducing chemical fertilizer application,Ganzhou and Yichun should be focus on in Jiangxi province for scientific fertilization,especially the contribution of phosphorus and potassium fertilizer to agricultural output.
作者
柳开楼
万长艳
胡丹丹
胡惠文
余喜初
李大明
叶会财
胡志华
宋惠洁
LIU Kai-lou;WAN Chang-yan;HU Dan-dan;HU Hui-wen;YU Xi-chu;LI Da-ming;YE Hui-cai;HU Zhi-hua;SONG Hui-jie(Jiangxi Institute of Red Soil/National Engineering and Technology Research Center for Red Soil Improvement,Nanchang 330046,China)
出处
《湖北农业科学》
2022年第5期11-13,65,共4页
Hubei Agricultural Sciences
基金
江西省重点研发计划项目(20203BBFL63063)
江西省自然科学基金项目(20192BAB203022)
国家红壤改良工程技术研究中心开放基金项目(2020NETRCRS1-9)。
关键词
江西省
化肥
农业产值
Jiangxi province
chemical fertilizer
agricultural output
