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试验研究表明,旱坡地森林砍伐后未合理利用的裸地,水土流失是极严重的,年径流量和土壤侵蚀量分别达到377.75m3/公顷和119.41吨/公顷。在不同水土保持措施中,条带种植处理即在种植作物时,每隔一定距离沿等高线种植一带灌木和多年生草本组合成的栅篱作物,可显著减少地表径流和土壤侵蚀量,养分流失量仅约农民传统种植法的1/5,且土壤含水量提高,作物生长良好,产量增加,特别可使坡地逐渐变成梯土,是一项经济有效有发展前景的水土保持增产措施。
Experimental studies have shown that soil erosion is extremely serious in bare land that is not properly utilized after deforestation on sloping slopes, with annual runoff and soil erosion reaching 377.75m3 / ha and 119.41t / ha, respectively. In different soil and water conservation measures, the strip planting treatment means that when planting crops, planting a series of hedgerow crops with shrubs and perennial herbs along the contour at a certain distance can significantly reduce surface runoff and soil erosion, loss of nutrients It is only 1/5 of the traditional planting method of peasants, and soil moisture content increases, crops grow well and yield increases. In particular, it can gradually change the slope land into soil. It is a cost-effective and promising soil and water conservation measures.