论文部分内容阅读
在土壤侵蚀下垫因子中,坡度是其中的一个重要因素。通常,土壤侵蚀量随坡度增加而增加。在不同的坡度范围内,土壤侵蚀量的增加速率不同。本试验目的在于揭示坡度对土壤侵蚀量的影响,并寻求土壤侵蚀转折坡度。 一、材料与方法 本试验人工降雨装置和可调式试验小区木盒,均系自行设计、制造(见照片)。 (一)人工降雨装置。在一个面积为6平方米的范围内,装有12个喷水莲蓬头,并联连接压力水管。莲蓬头弧面离地面1.5米。第
Among the factors under soil erosion, slope is one of the important factors. Soil erosion generally increases with slope. The rate of increase of soil erosion is different at different slopes. The purpose of this experiment is to reveal the influence of slope on the amount of soil erosion and to seek the turning point of soil erosion. First, materials and methods The experimental artificial rain device and adjustable test plot wooden box, are designed, manufactured (see photo). (A) artificial rainfall device. In an area of 6 square meters, with 12 spray shower head, parallel connection pressure pipe. Shower head arc 1.5 meters from the ground. No.