典型文献
Comparison of nitrogen losses by runoff from two different cultivating patterns in sloping farmland with yellow soil during maize growth in Southwest China
文献摘要：
The loss of N in farmland is an important cause of agricultural non-point source pollution, which seriously impacts the aquatic environment. A two-year (2017-2018) experiment was conducted to investigate the characteristics of runoff and N losses under different tillage practices. Taking downslope ridge planting and cross ridge planting as the experimental treatments, the characteristics of surface runoff, interflow, and N losses in sloping farmlands with yellow soil were studied throughout the maize growth period. As the rainfall increased, the surface runoff and interflow also increased. The surface runoff and N losses in the surface runoff of downslope ridge planting were significantly higher than those of cross ridge planting. The interflow volumes and N losses in the 0-20 and 20-40 cm soil layers of the cross ridge planting were significantly higher than those of the downslope ridge planting. The total N (TN) losses from surface runoff accounted for 54.95-81.25％ of the N losses from all pathways. Therefore, we inferred that surface runoff is the main pathway of N losses. Dissolved total N (DTN) was the main form of N loss under different tillage measures, as it accounted for 55.82-94.41％ of the TN losses, and dissolved organic N accounted for 52.81-87.06％ of the DTN losses. Thus, we inferred that dissolved N is the main form of N loss. Future research must focus on the prevention and control of the N losses during the maize seedling stage to reduce the environmental pollution caused by ammonium N through runoff.
文献关键词：
中图分类号：
作者姓名：
HE Shu-qin;MA Rui;WANG Na-na;WANG Shuang;LI Ting-xuan;ZHENG Zi-cheng
作者机构：
College of Forestry,Sichuan Agricultural University,Chengdu 611130,P.R.China;College of Resources Science,Sichuan Agricultural University,Chengdu 611130,P.R.China
文献出处：
引用格式：
[1]HE Shu-qin;MA Rui;WANG Na-na;WANG Shuang;LI Ting-xuan;ZHENG Zi-cheng-.Comparison of nitrogen losses by runoff from two different cultivating patterns in sloping farmland with yellow soil during maize growth in Southwest China)[J].农业科学学报（英文）,2022(01):222-234
A类：
interflow
B类：
Comparison,nitrogen,losses,by,runoff,from,two,different,cultivating,patterns,sloping,yellow,soil,during,maize,growth,Southwest,China,important,agricultural,point,source,pollution,which,seriously,impacts,aquatic,year,was,conducted,investigate,characteristics,under,tillage,practices,Taking,downslope,ridge,planting,cross,experimental,treatments,surface,farmlands,were,studied,throughout,period,rainfall,increased,also,significantly,higher,than,those,volumes,layers,total,accounted,pathways,Therefore,inferred,that,main,Dissolved,DTN,form,measures,dissolved,organic,Thus,Future,research,must,focus,prevention,control,seedling,stage,reduce,environmental,caused,ammonium
AB值：
0.385748
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