摘要
试验通过模拟降雨的方法,探索降雨与农田土壤泥沙产出量的关系。试验表明,10%坡度条件下的泥沙累积量普遍高于相同降雨指数情况下5%的泥沙累积量,在坡度相同的条件下,泥沙累积量随着降雨量的增加而增加,在坡度为10%降雨量为150mm·h-1条件下,泥沙累积量最大,30min时,泥沙累积量可达到350kg。试验还对数据进行了回归分析,得到了相关的拟合函数。
The method by simulated rainfall experiment,the relationship between rainfall and the amount of soil sediment output was explored.The results showed that,10% gradient conditions was significantly higher than 5% of soil sediment output.Under the same conditions in the slope,sediment accumulation increased with rainfall,gradient of 10% in annual rainfall was 150 mm·h-1,soil sediment output could reach 350 kg.Experiments also conducted a regression analysis of data,the fitting function has been associated.
出处
《天津农业科学》
CAS
2011年第6期150-152,共3页
Tianjin Agricultural Sciences
关键词
模拟降雨
泥沙累积量
回归分析
simulated rainfall
soil sediment output
regression analysis
