论文部分内容阅读
基于丹江口坡地农田的田间试验数据,建立了WEPP模型坡面版所需的作物特性和种植管理措施参数、土壤物理特性参数、坡面特征参数等文件,并结合当地气象观测数据,模拟了丹江口地区4种植物篱(紫穗槐、金银花、黄花菜、龙须草)的坡面径流量和土壤侵蚀量.结果表明:WEPP模型坡面版能准确模拟研究区植物篱对坡面径流与土壤侵蚀的影响,该方法不仅可减少田间试验次数,而且省时省力,并能为植物篱的推广应用提供科学依据.4种植物篱中,紫穗槐的防蚀效果最好.在坡度5°下,研究区紫穗槐(1 m宽)的最佳种植间距为15m;坡度15°下,最佳种植间距为10 m;坡度25°下,最佳种植间距为3 m.
Based on the farmland field data of Danjiangkou slope farmland, the crop characteristics, plantation management measures parameters, soil physical characteristics parameters and slope characteristic parameters of WEPP model were established. Combining with the local meteorological observation data, 4 kinds of hedgerows (Amorpha fruticosa, Honeysuckle, Daylily, Scutellaria oryzae) were studied.The results showed that the WEPP model can accurately simulate the effects of hedgerows on runoff and soil erosion in the study area , This method not only can reduce the number of field trials, but also save time and effort, and provide a scientific basis for the popularization and application of hedgerows. Amorpha fruticosa has the best anti-corrosion effect among 4 hedgerows. , The best planting spacing of Amorpha fruticosa (1 m wide) in the study area is 15 m; the optimal planting spacing is 10 m at the slope of 15 °; and the optimal planting spacing is 3 m at the slope of 25 °.