干旱区生态环境知识资源中心(Arid): 民勤绿洲不同耕作方式农田表层土壤风蚀规律的风洞模拟研究

Arid

	民勤绿洲不同耕作方式农田表层土壤风蚀规律的风洞模拟研究
其他题名	Wind Tunnel Simulation of Wind Erosion in Surface Soil of Farmland Under Different Tillage Patterns in Minqin Oasis
	赵宇浩 1; 王立 1; 杨彩红 1; 王军强 2
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2019
卷号	39 期号:4 页码:202-206
中文摘要	[目的]比较分析不同耕作方式下农田表层土壤防风蚀机理和效果,为区域社会经济和生态环境建设提供科学依据。[方法]利用室内风洞及相关配套设备对甘肃民勤绿洲区的免耕、少耕、秋翻和深松农田表层土壤进行风蚀测试,计算风蚀速率及输沙率,研究其风沙运动规律,分析各种耕作农田表层土壤防风蚀情况。[结果]耕作措施对土壤风蚀速率的影响与风速大小相关,风速较小时,不同耕作方式对风速的影响差异不显著,而当风速大于14 m/s后不同耕作农田表层土壤风蚀速率开始出现较明显差异;少耕、秋翻、深松等耕作方式对农田表层土壤风蚀速率和输沙率的影响差异不明显;免耕耕作方式下农田表层土壤风蚀速率和输沙率最低,风速越高,差距越大;风速、耕作以及两者交互作用对农田表层土壤风蚀速率和输沙率有极显著影响。[结论]免耕耕作能有效抵抗农田表层土壤的风蚀,大幅度减少输沙率,表现出极佳的抗风蚀效果。
英文摘要	[Objective]The mechanism and effects of wind erosion prevention of farmland surface soil under different tillage patterns were compared and analyzed,so as to provide scientific basis for regional socio-economic and ecological environment construction.[Methods]Wind erosion tests were carried out on no-tillage,less tillage,autumn ploughing and subsoiling farmland surface soil in Minqin Oasis,Gansu Province,using indoor wind tunnel and related supporting equipment,wind erosion rate and sand transport rate were calculated, wind erosion movement law was studied,and wind erosion prevention of farmland surface soil was analyzed. [Results]The results showed that the effects of tillage measures on soil wind erosion rate were related to wind speed.When wind speed was small,the effects of different tillage patterns on wind speed were not significant,but when wind speed was greater than 14 m/s,the wind erosion rates of surface soils began to show significant differences in different tillage fields;the effects of less tillage,autumn tillage,deep loosening and other tillage patterns on wind erosion rate and sand transport rate of surface soils were significant.The wind erosion rate and sediment transport rate of farmland surface soil were the lowest under no-tillage tillage,and the higher the wind speed,the greater the gap.Wind speed,tillage and their interaction had a significant impact on the wind erosion rate and sediment transport rate of farmland surface soil.[Conclusion] No-tillage could effectively resist the wind erosion of the surface soil of farmland,greatly reduce the sand transport rate,showing excellent anti-wind erosion effect.
中文关键词	耕作方式 ; 农田表层土壤 ; 风洞 ; 风蚀 ; 输沙率 ; 民勤绿洲区
英文关键词	tillage patterns topsoil of farmland wind tunnel wind erosion sediment transport rate Minqin oasis area
语种	中文
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6570037
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316003
作者单位	1.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国; 2.甘肃省农业工程技术研究院, 武威, 甘肃 733007, 中国
推荐引用方式 GB/T 7714	赵宇浩,王立,杨彩红,等. 民勤绿洲不同耕作方式农田表层土壤风蚀规律的风洞模拟研究[J]. 甘肃农业大学,2019,39(4):202-206.
APA	赵宇浩,王立,杨彩红,&王军强.(2019).民勤绿洲不同耕作方式农田表层土壤风蚀规律的风洞模拟研究.水土保持通报,39(4),202-206.
MLA	赵宇浩,et al."民勤绿洲不同耕作方式农田表层土壤风蚀规律的风洞模拟研究".水土保持通报 39.4(2019):202-206.