Characteristics of Nitrate Nitrogen Transport in the Gas-encapsulated Belt of the YongNing Yellow River Irrigation Area of the Yinchuan Plain
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/hm2 at 100 cm in bare land and 48.8 kg/hm2 at 150 cm during maize planting.The transport,accumulation and leaching of nitrate nitrogen were obviously affected by irrigation and plant growth.
soil moistureaerated zonenitrate nitrogenYongning irrigation area in Ningxialeaching
万方数据
维普
