HE Shuqin, GONG Yuanbo, ZHENG Zicheng. Characteristics of Nitrogen Loss in Sloping Farmland in the Whole Maize Growth Periods During Rill Erosion Stage[J]. 2018, 32(6): 40-45.
DOI:
HE Shuqin, GONG Yuanbo, ZHENG Zicheng. Characteristics of Nitrogen Loss in Sloping Farmland in the Whole Maize Growth Periods During Rill Erosion Stage[J]. 2018, 32(6): 40-45. DOI: 10.13870/j.cnki.stbcxb.2018.06.007.
Characteristics of Nitrogen Loss in Sloping Farmland in the Whole Maize Growth Periods During Rill Erosion Stage
In order to effectively prevent and control nitrogen loss in the growth stages of maize in the purple soil area during rill erosion stage
the soil erosion and nitrogen loss was studied. The artificial simulated rainfall combined with field runoff plot experiments were used to study the characteristics of nitrogen loss
including surface runoff
interflow and sediment yield
soil flow and erosion sediment
in the whole stages of maize during rill erosion stage under the rainfall intensity of 1.5 mm/min. The results showed that surface runoff
interflow and sediment yield were increased first with rainfall duration
and the values tended to peak during maize growth stages at rill erosion. Total nitrogen
soluble total nitrogen
nitrate and sediment yield in surface runoff showed an overall trend of first increase and then stability
while ammonium nitrogen loss showed volatility in the early rain period and became steady gradually with rainfall duration. The total nitrogen losses in surface runoff were the highest at seedling stage of maize
and the maximum was 628.77 mg/m2. The total nitrogen losses in interflow were the highest at jointing stage and tasseling stage of maize. The total nitrogen losses in sediment yield were the highest at seedling stage of maize
and the maximum was 144.95 mg/m2.Interflow were the main channels for nitrogen losses
and nitrate nitrogen was the main form of nitrogen loss during the rainfall process.
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Characteristics of Runoff and Nitrogen Losses in Yellow Soil Sloping Cropland at Mature Stage of Maize
Characteristics of Runoff and Dissolved Organic Carbon Loss in Purple Soil with Different Slope Gradients During Maize Growth Stages
Effects of Tillage Practices on Soil Organic Carbon Loss/Leaching Process in Red Soil Slope Farmland
Mineral Nitrogen Loss in Different Types of Vegetation and Its Response to Environmental Factors in the Water Conservation Forest in the Headstream of Taizi River
Characteristics of Sediment Yield and Organic Carbon Loss in Slope Farmland with Contour Ridges During Maize Seedling Stage
Related Author
WANG Shuang
YE Lianghui
ZHENG Zicheng
LI Tingxuan
HE Shuqin
GONG Yuanbo
WU Wanhua
YAN Keyu
Related Institution
College of Resource Science, Sichuan Agricultural University
Agricultural Bureau of Shifang, Shifang
Lab. of soil & Water Conservation and Desertification Combating, Sichuan Agricultural University, Chengdu
College of Water Conservancy, Yunnan Agricultural University
Research Center of Green Smart Farmland and Carbon Emission Reduction Engineering in Colleges and Universities of Yunnan Province