Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area

Zhang Xiaolian; Xiao Yang; Zhang Ruihao; Shao Shegang; Xu Jinzhong; Ni Dong; He Xuyang; Niu Yuxuan

doi:10.13961/j.cnki.stbctb.2023.05.011

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Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area

- Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area
- Bulletin of Soiland Water Conservation Vol. 43, Issue 5, Pages: 87-94(2023)
- 作者机构：
  
  1. 黑龙江省齐齐哈尔市依安县水务局,黑龙江,齐齐哈尔,161500
  2. 黑龙江大学现代农业与生态环境学院,黑龙江,哈尔滨,150080
  3. 交通运输部公路科学研究所,北京,100088
  4. 黑龙江省水利科学研究院,黑龙江,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2023.05.011
  CLC： S157.1
- Published：2023
- 稿件说明：
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Zhang Xiaolian, Xiao Yang, Zhang Ruihao, et al. Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 87-94.
DOI：

Zhang Xiaolian, Xiao Yang, Zhang Ruihao, et al. Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 87-94. DOI： 10.13961/j.cnki.stbctb.2023.05.011.

摘要

[目的

]

研究黑土区低山丘陵地形侵蚀沟土壤养分特征及其影响因素，为黑土区土地资源合理运用，土壤肥力精确化管理和退化土壤修复工作提供数据与理论支持。[方法

]

以黑龙江省延寿县不同发育类型侵蚀沟表层土壤作为研究对象，对0—40 cm层侵蚀沟各部位的土壤进行取样测定，量化分析土壤养分特征。[结果

]

①不同侵蚀沟道间有机质、全氮、全磷、全钾、速效磷、速效钾、碱解氮含量较CK差异显著(p＜0.05)，随侵蚀沟发育，0—40 cm层的土壤有机质含量呈递减趋势，土壤全氮、全磷、全钾、速效磷、速效钾、碱解氮含量总体呈下降趋势。随着土层加深，土壤养分差异显著(p＜0.05)，呈下降趋势。受侵蚀—沉积影响，土壤有机质、全氮、全钾、碱解氮含量在沟头段降幅明显；土壤有机质、有效磷、有效钾含量在沟尾因沉积作用下降平缓。②土壤退化指数在0—40 cm层呈A

＞A

，随侵蚀沟发育，土壤退化程度加重。[结论

]

土壤养分与容重总体呈显著负相关，与土壤水稳性团聚体含量、黏粒含量呈显著正相关；土壤剖面与构型差异是造成土壤养分差异的根本原因，侵蚀沟发育是土壤养分变化的次要原因，土壤有机质、全氮、全钾含量也受到部位差异影响。

Abstract

[Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources

accurate management of soil fertility

and restoration of degraded soil in the black soil area. [Methods] Surface soil gully erosion for different types of eroded ditches in Yanshou County

Heilongjiang Province was determined by measuring and analyzing soil samples from the 0—40 cm layer in each part of the erosion gully. [Results] ① The contents of soil organic matter

total nitrogen

total phosphorus

total potassium

available phosphorus

available potassium

and alkali hydrolyzable nitrogen were significantly different (p＜0.05) for different erosion gully types compared with the check treatment. As an erosion gully developed

soil organic matter decreased in the 0—40 cm layer

and the contents of total nitrogen

total phosphorus

total potassium

available phosphorus

available potassium

and alkali hydrolyzable nitrogen also decreased. These nutrient contents were significantly different (p＜0.05) in different soil layers. Soil nutrient contents decreased with increasing depth. Because of erosion deposition

the contents of soil organic matter

total nitrogen

total potassium

and alkali hydrolyzable nitrogen decreased dramatically at the head of the gully

and at the same time

the contents of soil organic matter

available phosphorus

and available potassium decreased slowly. ② The soil degradation index followed the order of CK＞A2＞A1＞A3 in the 0—40 cm layer as erosion gullies developed

and the soil was gradually degraded. [Conclusion] Soil nutrients had an overall significant negative correlation with bulk density

and soil nutrients were positively correlated with water stable aggregates and clay content. Soil profile differences were the fundamental reason for the variation in soil nutrients. Erosion gully development was the secondary reason for nutrient changes. The contents of soil organic matter

total nitrogen

and total potassium were also affected by positional differences.

关键词

Keywords

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