[1]WANG Zhe,XIA Hui,YUAN Hao,et al.Spatial and Temporal Distribution of Soil Nitrogen and Phosphorus in Summer Corn Field in Eastern Plain of Baoding[J].Research of Soil and Water Conservation,2020,27(02):93-98,111.
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Spatial and Temporal Distribution of Soil Nitrogen and Phosphorus in Summer Corn Field in Eastern Plain of Baoding
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
93-98,111
Column:
Public date:
2020-03-30
- Title:
- Spatial and Temporal Distribution of Soil Nitrogen and Phosphorus in Summer Corn Field in Eastern Plain of Baoding
- Keywords:
- agricultural non-point source pollution; nitrate nitrogen; ammonium nitrogen; available phosphorus; summer maize; Eastern Plain Area of Baoding City
- CLC:
- S151.9; S158
- DOI:
- -
- Abstract:
- In order to study the agricultural non-point source pollution of summer maize farmland in Eastern Plain of Baoding City, soil sampling were taken in the positioning test site and Eastern Plain of Baoding City in 2016, respectively, and the temporal and spatial distribution of soil nitrogen and phosphorus contents in 2 m soil layer were investigated. The results showed that under the traditional field management, the vertical distribution of soil nitrate nitrogen presented as the S-shape along soil depth; spatially, nitrate nitrogen of surface soil was lower in the east and higher in the west, lower in the south and higher in the north; there were a local high values of nitrate nitrogen in subsoil and deep soil in the middle part of the study area, and the content of nitrate nitrogen in deep soil was lower in the east and higher in the west of the study area; the vertical distribution of ammonium nitrogen was uniform, and content was almost stable with the value of about 0.6 mg/kg; ammonium nitrogen in surface soil layer changed obviously on the spatial scale, while the range of ammonium nitrogen content in subsoil layer and deep soil layer changed slightly, and the range was less than 3 mg/kg; at the same time, contents of ammonium nitrogen in the subsoil and deep soil layer were high in the east and low in the west, high in the south and low in the north; the vertical distribution of available phosphorus decreased at first, then increased, and finally decreased with the increase of soil depth, and the content of available phosphorus in the surface soil layer decreased the most and changed obviously in space, the range was 32.66 mg/kg; the available phosphorus of the surface soil layer was low in the south and high in the north, and the those of the subsoil and deep soil layer were high in the east; There was the low trend in the west, but there was a difference between the contents in the north and the south. Therefore, according to the spatial and temporal changes of agricultural non-point sources in this region, it is of great practical significance to reduction of non-point source pollution and ecological construction in this region through considering the reasonable fertilization based on nitrogen and phosphorus contents in different soil layers during the growing period of summer maize.
- References:
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Last Update:
2020-02-25