Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province

SONG Ya-li; WANG Ke-qin; WANG Ping; TANG Zuo-xin; LI Qiu-fang; DU Yun-xiang

您当前的位置：

首页 >

文章列表页 >

Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province

- Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province
- Bulletin of Soiland Water Conservation Vol. 29, Issue 6, Pages: 27-31(2010)
- 作者机构：
  
  西南林业大学环境科学系,云南,昆明,650224
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
移动端阅览
SONG Ya-li, WANG Ke-qin, WANG Ping, et al. Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 27-31.
DOI：

SONG Ya-li, WANG Ke-qin, WANG Ping, et al. Effects of Nitrogen Input on Characteristics of Nitrogen Loss from Sloping Fields Under Natural Rainfall in Central Yunnan Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 27-31. DOI：

摘要

采用野外田间试验和定点监测的方法

通过研究滇中坡耕地地表径流中氮素流失方式、途径反映其流失特征。结果表明

产流量与降雨量相关系数达到0.8641(P<0.05)

而土壤侵蚀量与降雨量没有表现出很好的相关关系。在相同降雨条件下

径流总氮、硝态氮、铵态氮浓度总体均表现为随着施氮量的增加

浓度逐渐增加

即CK<N1<N2<N3<N4<N5;降雨条件不同

3者最高值达到5.57

4.36

1.30mg/L。硝态氮在自然降雨条件下

占总氮浓度的21.62%～83.55%

铵态氮占1.02%～38.58%

硝态氮是氮素流失的主要形式。降雨径流的产生均伴随着土壤侵蚀

泥沙中总氮流失量也呈不规则波动。各处理全氮富集率在1.02～1.58之间变化。降雨强度最大时

富集率总体趋势最大

达到1.23～1.53。在相同降雨条件下

随着施肥量的增加

全氮富集率差异不明显

且随着时间的的推移逐渐降低。

Abstract

Sentinel surveillance method was used to study patterns and means of nitrogen loss in sloping fields in the central Yunnan Province so as to reveal nitrogen loss characteristics.Results showed that the related coefficient between runoff and rainfall was 0.864 1

but soil erosion and rainfall did not show a good correlation.Under the same rainfall conditions

the amounts of TN

NO-3—N

and NH+4—N were generally increased with the increased amount of nitrogen in the order of CKN1N2N3N4N5 and under different rainfall conditions

the values of the three chemicals reached 5.57

4.36

and 1.30 mg/L

respectively.The NO-3—N concentration accounted for 21.02%～83.55% in soluble nitrogen and NH+4—N concentration was only about 1.02%～38.58% under natural rainfall conditions

indicating that NO-3—N was the main form of nitrogen loss.Rainfall runoff induced soil erosion and the amount of TN in sediment also showed irregular fluctuation.Nitrogen enrichment rate was about 1.02～1.58 in different treatments.When rainfall intensity was up to maximum

the enrichment rate of the overall trend increased and reached 1.23～1.53.Nitrogen enrichment rate was not significantly different with the increase of fertilizer under the same rainfall conditions and it decreased with time.

关键词

Keywords

references

Views

1397

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Soil Erosion and Its Relations to Slope Field Productivity in Hilly Gully Area of Loess Plateau and Dry-hot Valley of Jinshajiang River

Study of Soil Water Redistribution in Sloping Cultivated Land

Spatial Heterogeneity of Nitrogen Distribution in Sediment of Dianchi Lake

Influences of Irrigation and Nitrogen Combination on Trace Elements of Fuji Apple in South Xinjiang Region

Effects of Water-retaining Agent on Leaching Loss of Nitrogen and Potassium from Special Fertilizer for Rubber Tree

Related Author

WU Xiao-wei

LI Jin-hong

QI Shi

WANG Ke-Qin

CHEN Qi-bo

WEI Yong-xia

ZHANG Yan-jun

YANG Hao

Related Institution

Agricultural Construction Office of Xiji County, Xiji 756200, Ningxia Hui Autonomous Region

Soil and Water Conservation Office of Yuanmou County,Yuanmou

Beijing Soil and Water Conservation College of Forestry University

Environmental Science Department of Southwest Forestry College

College of Water Resources and Civil Engineering, Northeast Agricultural University

⁰