摘要
用田间试验法和径流小区法研究通南高沙土区土壤侵蚀特征 .研究表明 ,该区农田田面土壤输出量远小于田间沟道淤积量 ,淤积量为输出量的 4 7 3～ 5 6 6倍 ;用径流小区测得的土壤侵蚀量不能完全反映高沙土区土壤侵蚀的特点 ;降水量、径流量、覆盖率和含沙量之间存在着密切的相关关系 .
By use of the field test method and normal runoff plot method, the characteristics of soil erosion in high sand-content farmlands are studied. The results show that the output of soil from farmlands in this area is much less than the siltation in ditches, the amount of siltation being 47.3～56.6 times of the output of soil, and that the amount of soil erosion measured by the normal runoff plot method cannot completely reflect the characteristics of soil erosion in high sand-content regions. It is also indicated that there are close relationships between precipitation, runoff, covering ratio, and sand content.
出处
《水利水电科技进展》
CSCD
2003年第1期35-37,共3页
Advances in Science and Technology of Water Resources
关键词
农田
土壤侵蚀
径流试验
降水量
径流量
含沙量
Tongnan high sand-content soil
soil erosion
runoff test
precipitation
runoff
sand content
