辽西低山缓丘地区农林复合经营水土保持效益的初探

在辽宁省朝阳低山缓丘地区实施农林复合经营技术措施 ,研究该项技术在水土保持减水减沙方面的效益。2a的试验结果表明 ,与荒坡对照区相比较 ,有植被覆盖的区域水土保持能力强。单纯种植农作物 1997年平均减水 40 0 7%、减沙 38 8% ,1998年为 2 5 52 %和 39 1% ;农林复合经营 1997年平均减水 36 4 2 %、减沙 53 9% ,1998年为 44 2 9%和 59 3 %。初步证明农林复合经营在水土保持减水、减沙方面效益更为突出。

Researches on soii and water conservation benefit agro forestry management in low mountain gentle hill areas in western Liaoning

Agro-forestry management technological measures were implemented in low mountain gentle hill areas in Chaoyang county, Liaoning province, and the benefit of soil and water conservation was studied. The experimental results of 2 years indicated that abilities of soil and water conservation were stronger in vegetation parts than in wasted hills (the control). Planting crops purely, the average value of water and sand reduction were 40.07% and 38.8% in 1997 , 25.52% and 39.1% in 1998, respectively. Implementing agro-forestry management, the average value of water and sand reduction were 36.42% and 53.9% in 1997, 44.29% and 59.3% in 1998,respectively. This proved initially that the benefit of soil-water conservation and water sand reduction of agro-forestry management was remarkable.