Knowledge Resource Center for Ecological Environment in Arid Area
小麦玉米田耕作模式的防风蚀效果 | |
其他题名 | Soil Wind Erosion in Wheat /Maize Intercropping with Zero Tillage and Straw Retention |
杨彩红1; 冯福学2; 柴强3; 耿艳香1; 伏星舟1 | |
来源期刊 | 中国沙漠 |
ISSN | 1000-694X |
出版年 | 2019 |
卷号 | 39期号:4页码:9-15 |
中文摘要 | 通过风洞实验,在5个风速下对6种耕作方式下农田土壤风蚀速率、0 ~ 20 cm风沙流结构进行了模拟研究。结果表明:保护性耕作土壤风蚀速率较传统耕作平均降低20%~ 40%;保护性耕作和传统耕作条件下土壤风蚀速率均随风速的增大呈幂函数递增,但在传统耕作条件下递增较快;风速14 m·s~(-1)是荒漠绿洲农田土壤风蚀加剧转折点,当风速>14 m·s~(-1)时保护性耕作下风蚀速率较传统耕作明显降低; 0 ~ 20 cm内,传统耕作和保护性耕作下输沙率与高度分别呈线性和指数关系,保护性耕作下0~ 4 cm输沙量和输沙量百分比( Q_(0~ 4) /Q_(0~ 20) )均低于传统耕作。 |
英文摘要 | Through wind tunnel experiment,the rate of soil wind erosion and blown sand structure under condition of conservational tillage and conventional tillage were studied. The results indicated that: The mean rates of soil wind erosion under conservational tillage were 20 to 40 percent less than that under conventional tillage. A power functions was found between the rate of wind erosion and wind velocity in the eight simulated tillage conditions,and the rate of wind erosion increased faster with the increasing wind velocity under conventional tillage. Wind velocity of 14 m·s~(-1) was the significant point to aggravate soil wind erosion,while conservational tillage greatly decreased the rate of soil wind erosion when the wind velocity beyond 14 m·s~(-1). In the height of 0-20 cm,the sand transport rate under conventional tillage decreased within increasing height by a negative line function,while negative exponential functions were founded under conservational tillage. Under conservational 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 conventional tillage. |
中文关键词 | 免耕轮作 ; 间作 ; 土壤风蚀 ; 风洞实验 ; 风沙流结构 |
英文关键词 | no tillage with crop rotation intercropping soil wind erosion wind tunnel test structure of wind-sand flow |
语种 | 中文 |
收录类别 | CSCD |
WOS类目 | ENVIRONMENTAL SCIENCES |
WOS研究方向 | Environmental Sciences & Ecology |
CSCD记录号 | CSCD:6526887 |
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/2XILL650/315776 |
作者单位 | 1.甘肃农业大学林学院, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学水利水电工程学院, 兰州, 甘肃 730070, 中国; 3.甘肃农业大学;;甘肃农业大学农学院, 甘肃省干旱生境作物学重点实验室;;, 兰州;;兰州, 甘肃;;甘肃 730070;;730070, 中国 |
推荐引用方式 GB/T 7714 | 杨彩红,冯福学,柴强,等. 小麦玉米田耕作模式的防风蚀效果[J]. 甘肃农业大学,2019,39(4):9-15. |
APA | 杨彩红,冯福学,柴强,耿艳香,&伏星舟.(2019).小麦玉米田耕作模式的防风蚀效果.中国沙漠,39(4),9-15. |
MLA | 杨彩红,et al."小麦玉米田耕作模式的防风蚀效果".中国沙漠 39.4(2019):9-15. |
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