摘要
为研究硝态氮在银川平原永宁引黄灌区的运移特征,在永宁县杨和镇观桥村种植园内选择一处剖面建立包气带原位监测点,选取7个土壤深度对其进行为期两年的监测,其中2019年为裸地,2020年种植玉米。经过研究发现:随着灌溉事件的发生,硝态氮随着土壤水向下运动并且发生累积和淋失,其中裸地在100 cm处发生明显累计,淋失量为127.8 kg/hm^(2);种植玉米期间在150 cm处发生明显累积,淋失量48.8 kg/hm^(2)。硝态氮的运移、累积和淋失明显受到灌溉、植物生长作用的影响。
In order to study the migration characteristics of nitrate nitrogen in the Yongning Yellow River irrigation area of the Yinchuan Plain,an in-situ monitoring point of the gas-bearing zone was established in the plantation of Guanqiao Village,Yanghe Town,Yongning County,and seven soil depths were selected to monitor it for two years,of which 2019 was bare land.Corn was planted in 2020.The results showed that with the occurrence of irrigation events,nitrate nitrogen moved downward with soil water and accumulated and leached,including 127.8 kg/hm^(2) at 100 cm in bare land and 48.8 kg/hm^(2) at 150 cm during maize planting.The transport,accumulation and leaching of nitrate nitrogen were obviously affected by irrigation and plant growth.
作者
赵志超
马玉学
公亮
燕凤
谷洪彪
Zhao Zhichao;Ma Yuxue;Gong Liang;Yan Feng;Gu Hongbiao(Institute of Disaster Prevention,Sanhe,China;Ningxia Fundamental Geological Survey Institute(Geological and Mineral Resources Center Laboratory of Ningxia),Yinchuan,China;Changli County Soil and Water Conservation Workstation,Qinhuangdao,China;Nanjing Tech University,Nanjing,China)
出处
《科学技术创新》
2024年第19期215-219,共5页
Scientific and Technological Innovation
基金
宁夏自然科学基金项目(2023AAC03769)。
关键词
土壤水分
包气带
硝态氮
宁夏永宁灌区
淋失
soil moisture
aerated zone
nitrate nitrogen
Yongning irrigation area in Ningxia
leaching
