三峡库区砾石坡耕地农林复合经营效益研究

Study on Comprehensive Benefits of Agroforestry in Sloping Land in Three Gorges Area

在三峡库区砾石坡耕地采用水平阶整地方式 ,布设等高植物篱 ,实施农林复合经营技术。通过近 1年的实地观测 ,对此项技术在防治水土流失、改土方面的效益作了初步研究 ,结果发现 :农林复合经营技术可以增加土壤总孔隙度和非毛管孔隙度 ,降低土壤容重 ;有效减少水土流失量 ,复合经营小区的土壤流失量仅是对照 (CK)的1 1 .4 2 %。因此 。

In Three Gorges area, we adopted level terrace and asigned contour hedgerows, namely applying agroforestry management since 2000. By observing the amounts of sediment and runoff and analyzing the soil fertility, we can conclude that this technique could improve soil physical properties, increase soil hole capacities,reduce soil bulk density and reduce soil and water losses. So, this technique is worth developing in Three George Area.