黑土区梯田土质田坎的侵蚀效应分析  

Erosion Effect of Terraced Soil Ridge in Black Soil Area

作　　者：汤永强 许晓鸿 杨献坤[2] 王永丰[2] 崔斌[2] 崔海峰[1] TANG Yongqiang;XU Xiaohong;YANG Xiankun;WANG Yongfeng;CUI Bin;CUI Haifeng(College of Resources and Environment,Jilin Agricultural University,Changchun 130118,China;Jilin Provincial Institute of Soil and Water Conservation Science,Changchun 130033,China)

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]吉林省水土保持科学研究院,长春130033

出　　处：《吉林农业大学学报》2021年第4期463-468,共6页Journal of Jilin Agricultural University

基　　金：吉林省财政厅公益专项(201408)。

摘　　要：为揭示不同季节修筑的土坎梯田和种植不同植物对田坎侵蚀特性的影响,采用建设微型径流小区法对不同季节修筑的田坎和栽植不同植物条件下的径流量、土壤流失量和抗剪强度进行观测,探索黑土区新修土坎梯田田坎侵蚀情况的差异和特征。结果表明:不同季节修筑土坎梯田田坎土壤流失量表现为W_(春)>W_(秋);3种植物田坎径流量为Q_(黄花菜)>Q_(紫花苜蓿)>Q_(紫穗槐),土壤流失量为W_(黄花菜)>W_(紫花苜蓿)>W_(紫穗槐);保水保土效果为紫穗槐>紫花苜蓿>黄花菜。土坎梯田田坎抗剪强度与土壤流失量的关系呈现负相关关系,抗剪强度随着降雨次数的增加而逐渐达到稳定。In order to reveal the effects of terraces built in different seasons and planted with different plants on the erosion characteristics of terraces, the method of constructing micro-runoff area was used to observe runoff, soil loss and shear strength of terraces built in different seasons and planted with different plants, and the differences and characteristics of erosion of newly built terraces in black soil area were explored. The results show that: Soil loss of terraces built in different seasons is W_(spring)>W_(autumn);Runoff of terraces planted with three plants is Q_(cauliflower)>Q_(alfalfa)>Q_(false) indigo bushand soil loss is W_(cauliflower)>W_(Alfalfa)>W_(false) indigo bush;Effect of water preservation and soil preservation is false indigo bush>alfalfa>cauliflower;Relationship between shear strength of terraces and soil loss showed a negative correlation, and shear strength gradually stabilized with the increase of rainfall times.

关 键 词：黑土区 新修土坎梯田 径流量 土壤流失量 抗剪强度 

分 类 号：S157[农业科学—土壤学]