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通过四年 8°,15°旱坡耕地上试验生物研究栅篱梯化护埂。结果表明 :生物栅篱梯化护埂 ,能有效遏制旱坡地水土养分流失。达到保水、保土、保肥 ,增产、增收的效果。8°坡生物栅篱梯化护埂比未梯化对照 ,减少径流 79.6 % ,减少土侵蚀 93 .6 % ,减少养分流失 91.7% ,产量提高 17.1%～2 1.3 %。 15°坡生物栅篱梯化护埂 ,比未梯化对照减少径流74.6 % ,减少土壤侵蚀 96 .6 % ,减少养分流失 94.6 %。产量提高 14.8%～ 2 2 .7%。尤以生物梯化护埂 ,配套横坡聚垄耕作效果最佳 ,比对照减少径流 95 995 .8m3/ (km2 ·年 ) ,减少81% ,减少土壤侵蚀 2 798.7t/ (km2 ·年 ) ,减少 98.4% ,减少养分流失 96 .9% ,土壤含水量提高 7.4% ,平均增加蓄水42m3/ 6 6 7m2
Through four years of 8 °, 15 ° arid slope farmland biological experimental research fence barrier nursing care. The results showed that bio-gate barrier protection can effectively restrain water and soil nutrient loss on dry slopes. To water, earth, fertilizer, increase production, increase income effect. Compared with the non-step-contrast control, the bio-fence barrier of 8 ° slope reduced runoff by 79.6%, reduced soil erosion by 93.6%, reduced nutrient loss by 91.7% and increased yield by 17.1% -2.23%. 15 ° slope biological barrier barrier protection, than the non-ladder control to reduce runoff 74.6%, reduce soil erosion 96.6%, reduce nutrient loss 94.6%. Output increased 14.8% ~ 22.7%. Especially in bio-ladder nursing, the best effect of cross-slope polygamy farming was achieved, which reduced the runoff by 95 995.8m 3 / (km 2 · year) compared with the control, decreased by 81% and reduced the soil erosion by 2 798.7t / (km 2 · year) A decrease of 98.4%, a decrease of 96.9% of nutrient loss and a 7.4% increase of soil water content, an average increase of 42m3 / 6 6m2