2026-04-14 08:35 浏览次数 20
土壤侵蚀
pollution loading of particle n and p in chaohu lake watershed could be evaluated through export model of n and p after annual soil eroding volume was work out according to usle equation.
流域颗粒态n、p污染负荷估算是由usle方程得到流域土壤流失量(土壤侵蚀模数),然后由颗粒态n、p输出模型计算得出。
in the dry land and garden plot, the soil eroding amount of terraced fields is only 1/3 of that be ploughed directly along the slope.
等高作梯的旱耕地和园地土壤侵蚀量仅为顺坡直耕的旱耕地和园地顺坡的1/3左右;