Features of Soil Nutrients Loss Under Different Land Use in Southwest Mountainous Areas of He'nan Province

WANG Guozhong; LI Zhongyuan; QU Jiangan; ZUO Qiting; ZHANG Wuyun

doi:10.13961/j.cnki.stbctb.20170327.001

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Features of Soil Nutrients Loss Under Different Land Use in Southwest Mountainous Areas of He'nan Province

- Features of Soil Nutrients Loss Under Different Land Use in Southwest Mountainous Areas of He'nan Province
- Bulletin of Soiland Water Conservation Vol. 37, Issue 2, Pages: 83-88(2017)
- 作者机构：
  
  1. 黄河水文水资源科学研究院,河南,郑州,450004
  2. 河南省水文水资源局,河南,郑州,450003
  3. 河南省水土保持监督监测总站,河南,郑州,450008
  4. 郑州大学水利与环境学院,河南,郑州,450001
  5. 河南省南阳水文水资源勘测局,河南,南阳,473000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20170327.001
  CLC：
- Published：2017
- 稿件说明：
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WANG Guozhong, LI Zhongyuan, QU Jiangan, et al. Features of Soil Nutrients Loss Under Different Land Use in Southwest Mountainous Areas of He'nan Province[J]. Bulletin of Soiland Water Conservation, 2017, 37(2): 83-88.
DOI：

WANG Guozhong, LI Zhongyuan, QU Jiangan, et al. Features of Soil Nutrients Loss Under Different Land Use in Southwest Mountainous Areas of He'nan Province[J]. Bulletin of Soiland Water Conservation, 2017, 37(2): 83-88. DOI： 10.13961/j.cnki.stbctb.20170327.001.

摘要

[目的

]

对豫西南山区不同用地类型养分流失特征进行研究，为区域土地规划、水土流失和农业面源污染的防控提供科学依据。[方法

]

选取桃庄河流域和铁瓦河流域5类常见农田，监测其地表径流中的养分浓度，并用SCS模型估算了平水年份农田中随地表径流流失的养分数量。[结果

]

各种农田径流中的养分含量和平水年随径流流失的养分数量基本一致，桃庄河流域表现为：COD

> 氮肥 > 磷肥；铁瓦河流域是：氮肥 > COD

> 磷肥，这表明前者施用的有机肥和氮肥较多，后者则是氮肥和有机肥较多；不同农田随径流流失的养分数量状况，桃庄河流域为：药材地 > 芝麻地 > 玉米地 > 花生地 > 果园；铁瓦河流域则为：蔬菜地 > 玉米地 > 坡地 > 林地 > 果园，这不仅与施肥种类及数量有关，还与种植的作物、下垫面等状况有关。[结论

]

该区需调整作物结构、改变盲目施肥的传统，减少养分流失和面源污染。

Abstract

[Objective] The nutrient loss characteristics in different land use types were studied in southwest mountainous areas of He'nan Province to provide scientific basis for regional land planning

and for the prevention and control of agricultural non-point source pollution

water loss and soil erosion. [Methods] Five kinds of common farmland were selected in Taozhuanghe basin and Tiewahe basin

and wherein the nutrients concentrations in runoff were monitored and the nutrients loss was estimated by SCS model in normal flow year from different fields. [Results] The nutrients contents in all kinds of farmland were coincided with their loss observed in normal flow year

but were different in different catchment. In Taozhuanghe basin

COD was the most

nitrogen fertilizer was moderate and phosphate fertilizer was the least; while in Tiewahe basin

nitrogen fertilizer was the most

COD was moderate and phosphate fertilizer was the least. This indicated organic and nitrogen fertilizer were more preferably used in Taozhuanghe basin; nitrogen and *organic fertilizer were more frequently used in Tiewahe basin. Nutrients loss varied in different fields

in Taozhuanghe basin the rank was: herbs > sesame > corn > peanut > orchard; In Tiewahe basin

it was: vegetable > corn > slope > woodland > orchard. Nutrients loss was not only related to fertilizer type and application quantity

but also to the condition of underlying surface

such as slope

crops

etc. [Conclusion] It is necessary that the crop structure should be adjusted and the traditional fertilization custom should be changed according to local conditions to reduce nutrient loss and non-point source pollution.

关键词

Keywords

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