西南丘陵山区坡耕地植物篱水土保持效益研究进展[1]

从植物篱拦截径流、减缓坡度、改善土壤理化性质、提高土壤酶及微生物活性、保护生物多样性等方面综述了植物篱控制水土流失的机理,总结了西南丘陵山区不同植物篱模式的水土保持效果及坡度和平衡施肥对其的影响。西南丘陵山区植物篱研究以草本类的香根草、黄花菜以及乔木类的新银合欢等居多,其中黄花菜多与果树配合。最后从加强植物篱土壤生物学特性和植物篱带间距方面的研究进行了展望,以期为西南丘陵山区植物篱水土保持研究与应用提供参考,促进该区域化肥减量增效目标的实现。

Soil and Water Conservation Benefits of Hedgerows in Sloping Cropland in Hilly Region of Southwest China: A Review

From the point view of retarding runoff,slowing down slope,improving soil physical and chemical properties,increasing soil enzyme and microbial activities,biodiversity conservation,etc.,this paper summarized the research progress in the mechanisms of soil erosion control of hedgerows.Soil and water conservation benefits and influences of cropland slope and balanced fertilization on different hedgerows in the hilly region of Southwest China were explored.In this region,researches mainly tended to be focused on herbs like Vetiveria zizanioides and Hemerocallis citrina and trees like Leucaena leucocephala,of which Hemerocallis citrina was usually occurred with fruit trees.Finally,soil biological characteristics and distance of hedgerows were put forward,which could give a reference for further research,and provide the theoretical bases for the improvement of the efficiency of fertilizer.