摘要
我国春麦区主要位于西北地区 ,并与沙尘暴源区、路径区、多发区基本重合。根据沙尘暴形成机制、时空分布规律以及环境的暖干化趋势 ,历经 1 0多年的田间种植试验和推广证实 :我国沙尘暴多发区的春麦区改、扩种冬小麦可以在沙尘暴多发期增加地面植被覆盖 ,有效遏制扬沙条件 ;同时可以提高复种指数和光热利用率 ,进而提高粮食产量 ;推动西部大开发退耕还林。
Spring wheat districts and sandstorm areas are discovered to match basically.Aiming at formation mechanism of sandstorm,temporal and spatial distribution of sandstorm ,and the trend of toglobal warmth,on the basis of analysis of feasibility,over ten years of test and expanding on planting in the field,it was proved that replanting and expanding winter wheat in spring wheat district can increase the time of the ground cover of vegetitaon,effectively prevent the calarmity of the sandstorm,make fully use of sun resurces,realize the mutual improvement of social benefit, ecological benefit and economic benefit,and strengthen the sustainable development in northwest China.
出处
《干旱区资源与环境》
CSSCI
CSCD
2004年第4期46-50,共5页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金资助项目 (编号 40 0 610 0 7)
