干旱地区农业研究2012，Vol.30Issue(1)：113-118,6.
双垄全膜覆盖沟播栽培对甘肃中部坡耕地水土流失和作物产量的影响
Effect of double ridges mulched with plastic film on soil erosion and crop yield of sloping field in the central part of Gansu
摘要
Abstract
The soil erosion and crop yield as affected by various mulching practices were studied on the sloping field of hilly-gully region on the Loess Plateau in Yuzhong County of Cansu Province. Five regimes were set up: (1) Double ridges and furrows mulched by one film (DRM); (2) Flat plot all mulched with film (WM); (3) Alternating ridges and furrows, only the ridges mulched with film (RM) ; (4) Alternating mulched row and bare without ridge (NM); (5) Flat plot without mulch (CK). The results show that the DCM treatment is an effective method for decreasing soil erosion, and the soil erosion was lower in DRM than in CK, RM, NM and WM by 56.07% , 67.24% , 71.59% and 82.47% . The yield of maize is higher in DRM than in RM and NW by 46.76% and 58.07% . The yield of broad bean is higher in DRM than in RM, NW and CK by 46.52% , 54.99% and 102.96% . The yield of potato is higher in DRM than in RM, NW and CK by 95.21%, 76.30% and 74.89% . The water use efficiency ( WUE) of maize is higher in DRM than in RM and NW by 4.77 kg/(mm·hm2) and 9.47 kg/(mm·hm2) . The WUE of broad bean is higher in DRM than in RM, NW and CK by 3.24, 6.58 kg/(mm·hm2) and 5.03 kg/(mm·hm2). The WUE of potato is higher in DRM than in RM, NW and CK by 47.35, 42.02 kg/(mm·hm2) and 41.57 kg/(mm·hm2) . The DRM treatment is an effec-tive method for decreasing erosion, harvesting rainfall, increasing soil temperature and improving crop yields and WUE on the sloping field of hilly-gully region on the Loess Plateau in the rainfed farming of the semiarid region.关键词
双垄全膜覆盖沟播栽培/坡耕地/水土流失/作物产量Key words
double ridges and furrows/ slope field/ soil and water erosion/ crop yield分类
农业科技引用本文复制引用
张雷,金胜利,张光全,郭正昆..双垄全膜覆盖沟播栽培对甘肃中部坡耕地水土流失和作物产量的影响[J].干旱地区农业研究,2012,30(1):113-118,6.基金项目
甘肃省农业科技专项资金项目"半干旱区生态农业发展模式研究与示范"(2005-176). （2005-176）
