黑土区植物篱带对土壤抗蚀性作用效果研究

Effects of Hedgerow Strip on Anti-erodibility in the Black Soil Region of Northeast China

植物篱系统内部发挥的作用不尽相同,研究分析植物篱系统内影响土壤抗蚀性能、水土保持效果的主要部位,为黑土区推广应用植物篱模式提供技术支撑。通过小区定点试验研究发现,在黑土区植物篱模式中,篱带植物部位的土壤结构优于篱间耕地,篱带部位的土壤抗蚀性也高于篱间耕地部位,而土壤入渗性和抗冲性与篱间部位相比有显著的提高,由此可见,在黑土区坡耕地中由于引入了植物篱,篱带植物根系的作用,改善了土壤结构与性能,固结了土壤,提高了土壤综合抗蚀性能,从而发挥了减轻水土流失的重要作用。在黑土区植物篱模式内,篱带部位植物是影响土壤综合抗蚀性能和防蚀效果的重要因素,因此,植物模式研究应用中,要注重篱带植物品种保持水土性能的研究,开发优良植物篱品种,以提高植物篱模式的综合效益,进一步促进植物篱模式在黑土区的推广应用。

The effects of hedgerow are differentin its internal system. To provide technological support for popularization and application of hedgerow patterns in the Black Soil region of No,beast China, the effects of hedgerow system on soil anti-erodibility and the main position of water and soil conservation were studied. Compared with the soil between hedgerow strips in in-situ experiments, the soil around the hedgerow strip exhibited better structure and anti-erodibility. Besides, the infiltration property and anti-erodibility of the soil around the hedgerow strip were significant higher than that of the soil between hedgerow strips. The results showed that the hedgerow strip played important roles in reducing the soil and water loss. Because the plant root system improved the soil structure and property and consolidated soil, the hedgerow system increased the comprehensive soil anti-erodibility in the Black Soil region of Northeast China. The plant varieties of the hedgerow stripwere the most important factors to affect the comprehensive soil anti-erodibility. As a result, research on the effect of plant varieties in the hedgerow strip on soil and water conservation should be pay more attention. To increase the comprehensive benefit and the application of hedgerow strip in the Black Soil region of Northeast China, more and better hedgerow varieties should be developed in the future.