中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 垄作对旱作农田土壤风蚀影响的风洞实验研究 水土保持学报 2005,19 (3) 54-57+87
Position: Home > Articles > Influence of Ridge Tillage on Soil Wind Erosion on Rainfed Cropland:A Wind Tunnel Simulation Journal of Soil and Water Conservation 2005,19 (3) 54-57+87

垄作对旱作农田土壤风蚀影响的风洞实验研究

作  者：
刘目兴;王静爱;严平;刘连友;李小雁
单  位：
北京师范大学环境演变与自然灾害教育部重点实验室
关键词：
垄作;土壤风蚀;风蚀速率;风沙流结构;风洞实验
摘  要：
通过风洞实验,在5个风速下对6种不同结构的垄作及平作对照地的土壤风蚀速率、0～20cm风沙流结构进行了模拟观测研究。结果表明:垄作下平均土壤风蚀速率较平作下降低20%～60%。垄作和平作下土壤风蚀速率均随风速的增大呈幂函数递增,但平作下递增较快。风速为15m/s是旱作农田土壤风蚀加剧的转折点,当风速大于15m/s时垄作下风蚀速率较平作下明显降低。0～20cm内,平作和垄作下输沙率与高度分别呈负指数和负线性关系。垄作下0～4cm输沙量和输沙量百分比(Q0～4/Q0～20)均低于平作。不同结构的垄作间进行比较,垄脊高度相同时,垄沟比(垄脊高度与垄顶距的比值)越大,土壤风蚀速率越小,而Q0～4/Q0～20越大;垄沟比相同时,垄脊越高,土壤风蚀速率越大,而Q0～4/Q0～20越小。
译  名：
Influence of Ridge Tillage on Soil Wind Erosion on Rainfed Cropland:A Wind Tunnel Simulation
作  者：
LIU Mu-xing~(1,2,3), WANG Jing-ai~(1,4,5), YAN Ping~(1,2,3), LIU Lian-you~(1,2,3), LI Xiao-yan~(1,2,3) (1.Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing 100875; 2.College of Resources Science & Technology, Beijing Normal University, Beijing 100875; 3. China Center for Desert Research, Beijing Normal University, Beijing 100875; 4. College of Geography and Remote Sensing Sciences, Beijing Normal University, Beijing 100875; 5. Key Laboratory of Region Geography, Beijing Normal University, Beijing 100875)
关键词：
ridge tillage;soil wind erosion;rate of wind erosion;blown sand structure;wind tunnel experiment
摘  要：
Through wind tunnel experiment, the rate of wind erosion and blown sand structure under conditions of ridge tillage and flat tillage were studied. The results indicated that: The mean rates of wind erosion under ridge tillage were 20 to 40 percent less than that under flat tillage. A power function was found between the rate of wind erosion and wind velocity in the seven simulated tillage conditions, but the rate of wind erosion increased faster with the increasing wind velocity under flat tillage. Wind velocity of 15 m/s was the significant point to aggravate wind erosion, while ridge tillage greatly decreased the rate of wind erosion when the wind velocity beyond 15 m/s. In the height of 0～20 cm, the sand transport rate under flat tillage decreased with increasing height by a negative exponential function, while negative line functions were founded under ridge tillage. Under ridge tillage, the total volume of sand transport in 0～4 cm and sand transport percent between 0～4 cm and 0～20 cm (Q_(0～4)/Q_(0～20)) were less than that under flat tillage. Comparison among different kinds of ridge tillage, under the same ridge height, the rate of wind erosion decreased and Q_(0～4)/Q_(0～20) increased with increasing ratio between the height of ridge and the width of furrow. Under the same ratio between the height of ridge and the width of furrow, the rate of wind erosion increased and Q_(0～4)/Q_(0～20) decreased with the increasing height of ridge.

相似文章

导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46