| 雄安新区化肥使用及氮磷盈余空间分布特征研究 |
| |
| 作者姓名： | 陈涵婷 薛宏扬 李思露 石悦寒 赵海璇 金晓玲 李文超 |
| |
| 作者单位： | 河北农业大学 资源与环境科学学院，华北作物改良与调控国家重点实验室，河北 保定 071000 |
| |
| 基金项目： | 河北省教育厅科学技术研究项目(BJ2021026)； 华北作物改良与调控国家重点实验室自主课题(NCCIR2021ZZ-20)； 河北农业大学大学生创新创业训练计划项目(2020322)； 河北省引进留学人员资助项目(C20200330)。 |
| |
| 摘 要： | 近年来,随着白洋淀内源污染与点源污染逐渐得到控制,农业面源污染逐渐成为制约白洋淀水质改善的重要因素。改善白洋淀生态环境状况,加强农业面源污染防控至关重要。然而,当前对雄安新区农业面源污染的认识尚待提高,尤其需要加强对种植业化肥使用及其氮磷盈余空间分布特征研究。因此,本研究以雄安新区主要种植模式小麦—玉米为研究对象,采用农田养分平衡方法,分析2016年雄安新区小麦—玉米氮、磷养分输入、输出与盈余情况,为雄安新区农业面源污染防控提供科学依据。结果表明:(1)雄安新区农田氮磷养分的输入以化肥为主,输出以籽粒为主,总体化肥氮、磷投入水平为446.82 kg/hm^(2)、84.23 kg/hm^(2),籽粒输出氮、磷养分水平为312.71 kg/hm^(2)、42.79 kg/hm^(2);(2)雄安新区小麦—玉米农田氮磷养分均表现为盈余状况,且氮磷养分盈余与氮肥、磷肥投入极显著正相关;(3)雄安新区氮素、磷素盈余强度分别为273.74 kg/hm^(2)、44.99 kg/hm^(2),不同县市氮磷养分盈余量从高到低为安新县>雄县>容城县。建议进行合理的农田养分管理,开展养分平衡长期观测,实现化肥减量增效。
|
| 关 键 词： | 化肥 氮磷盈余 空间分布 雄安新区 |
| 收稿时间： | 2022-05-01 |
Study on spatial distribution characteristics of fertilizer use and nitrogen and phosphorus surplus in Xiongan New Area |
| |
| Institution: | College of Resources and Environmental Science,Hebei Agricultural University,State Key Laboratory of North China Crop Improvement and Regulation,Baoding 071000,China |
| |
| Abstract: | In recent years, with the internal and point source pollution in Baiyangdian gradually controlled, agricultural non-point source pollution had gradually become an important factor restricting the improvement of baiyangdian water quality. In order to improve the ecological environment of Baiyangdian, it was very important to strengthen the prevention and control of agricultural non-point source pollution. However, the current understanding of agricultural non-point source pollution in Xiongan New Area needed to be improved. In particular, it was necessary to strengthen the study on the spatial distribution characteristics of fertilizer use and nitrogen and phosphorus surplus in planting industry. Therefore, this study took the main planting pattern of wheat and corn in Xiongan New Area as the research object. The input, output and surplus of nitrogen and phosphorus nutrients in wheat and corn in Xiongan New Area in 2016 were analyzed by using the method of farmland nutrient balance. It provided scientific basis for the prevention and control of agricultural non-point source pollution in Xiongan New Area. The results showed as follows:(1) In Xiongan New Area, the input of nitrogen and phosphorus nutrients was mainly fertilizer, and the output was mainly grain. The total input level of fertilizer N and P was 446.82 kg/hm2、84.23 kg/hm2, and the output level of grain N and P nutrient was 312.71 kg/hm2、42.79 kg/hm2.(2) In xiongan New Area, both wheat and corn farmland nitrogen and phosphorus nutrients showed surplus. The surplus of nitrogen and phosphorus was positively correlated with the input of nitrogen and phosphorus.(3) The nitrogen and phosphorus surplus intensity in Xiongan New Area were 273.74 kg/hm2、44.99 kg/hm2, respectively. The surplus of nitrogen and phosphorus in different counties and cities was Anxin County > Xiong County > Rongcheng County. It was suggested to carry out reasonable nutrient management in farmland and carry out long-term observation of nutrient balance, so as to achieve fertilizer reduction and increase efficiency. |
| |
| Keywords: | fertilizer nitrogen and phosphorus surplus spatial distribution Xiongan New Area |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
