[1]李富程,花小叶,黄强.耕作深度对紫色土坡地旋耕机耕作侵蚀的影响[J].水土保持研究,2016,23(04):1-5.
　LI Fucheng,HUA Xiaoye,HUANG Qiang.Effects of Tillage Depth on Tillage Erosion by Rotary Cultivator Plough on the Steep Land in Purple Soil[J].Research of Soil and Water Conservation,2016,23(04):1-5.
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耕作深度对紫色土坡地旋耕机耕作侵蚀的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年04期 页码: 1-5 栏目: 出版日期: 2016-08-28
Title:
Effects of Tillage Depth on Tillage Erosion by Rotary Cultivator Plough on the Steep Land in Purple Soil
作者:
李富程1, 花小叶1, 黄强2
1. 西南科技大学 环境与资源学院, 四川 绵阳 621010;
2. 绵阳市环境监测中心站, 四川 绵阳 621010
Author(s):
LI Fucheng1, HUA Xiaoye1, HUANG Qiang2
1. College of Resources & Environment, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China;
2. Mianyang Environmental Monitoring Center, Mianyang, Sichuan 621010, China
关键词:
耕作侵蚀; 耕作深度; 磁性示踪; 旋耕机; 土壤退化
Keywords:
tillage erosion; tillage depth; magnetic tracer; rotary cultivator; soil degradation
分类号:
S157.1
摘要:
利用磁性示踪法定量研究紫色土坡地旋耕机上下耕作的耕作位移和土壤位移量，分析了不同耕作深度（8，10，12 cm）对耕作侵蚀的影响。结果表明：在研究坡度范围内（3.43%~20.97%），旋耕机不同耕作深度引起的土壤净位移差异显著（p=0.007），且随着耕作深度的增加土壤净位移显著增大，3种耕作深度的土壤净位移与坡度均显著相关，且随着耕作深度的增加相关性逐渐增强；耕作侵蚀速率随着耕作深度的增加而增大，耕作深度由8 cm增加为10 cm，耕作侵蚀速率增大了77%，由10 cm增加为12 cm耕作侵蚀速率增大了49%。耕作深度是影响紫色土坡地旋耕机耕作侵蚀的重要因素之一，增加耕作深度引起耕作侵蚀明显增加，因此合理调控耕作深度是防治紫色土退化的一种重要措施。
Abstract:
This study was implemented in purple soil regions of Sichuan. To evaluate the effect of tillage depth on tillage erosion by rotary cultivator plough, the magnetic tracer was used to label experiment plots of soil to quantify soil translocation and soil flux due to tillage. Three tillage depths of 8, 10 and 12 cm were set and seventeen plots were established for each tillage depth on a series of hillslopes with slope gradients ranging from 3.43% to 20.97%. The results showed that net soil displacement distances under different tillage depths were significantly different (p=0.007) and increased with tillage depth. Soil displacement distances were positively correlated to slope gradients for all treatments. Especially, the coefficient was gradually improved with the increasing tillage depth. As tillage depth increased from 8 cm to 10 cm and 10 cm to 12 cm, tillage erosion rate increased by 77% and 49%, respectively. Consequently, tillage depth was one of the critical factors affecting tillage erosion by rotary cultivator plough. Because tillage erosivity markedly enhanced with the increase of tillage depth, reasonably regulating the tillage depth plays an important role in prevention and control of soil degradation in the area of purple soil.

参考文献/References:

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备注/Memo

收稿日期:2015-07-12;改回日期:2015-08-18。
基金项目:国家自然科学基金（41401301）；西南科技大学博士基金（13zx7129）
作者简介:李富程(1982-),男,吉林蛟河人,博士,讲师,主要从事农业生态与水土保持研究。E-mail:lfckind@163.com

更新日期/Last Update: 1900-01-01