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通过对西峰、长武、耀县、彬县、淳化等水土保持试验站农地径流场多年观测资料的统计分析,研究了黄土高原沟壑区不同耕作措施及生物措施情况下坡面径流量、径流系数、下渗量以及产沙量,发现不同措施对坡面径流及产沙量的影响不同。以水平犁沟等高垄作,点播,低杆作物或高中杆与低杆作物间作或套作为最好。其保土效益依次为:≤3°缓坡地,耕作方法>播种方式>牧草>作物种类;≤20°陡坡地,牧草>播种方式>耕作方法>作物种类。
Based on the statistical analysis of the multi-year observational data of the farmland runoff in Xifeng, Changwu, Yao County, Binxian, Chunhua and other soil and water conservation pilot stations, the effects of different tillage measures and biological measures on slope runoff, Runoff coefficient, infiltration capacity and sediment yield. It is found that different measures have different effects on runoff and sediment yield. High furrows with horizontal furrows, on-demand, low-stalk crops or intercropping or nesting of high school and low-bar crops are the best. The soil conservation benefits were as follows: ≤3 ° gentle slope, tillage method> sowing method> pasture> crop species; ≤20 ° steep slope and pasture> sowing method> tillage method> crop species.