摘要
从资源利用、环境保护、经济发展的角度,分析了河西走廊日光温室发展的利弊。结果表明:采用日光温室很好地提高了光、热、水以及土地资源的利用率,使至少33% 的太阳能从无效资源转变为有效资源,光温生产潜力提高24 585 kg/hm 2(蔬菜、玉米),增幅75% ;新增≥10℃积温3 364.9℃/d,增幅123% ,生长期延长一倍,水资源利用率提高一倍左右;土地单位面积产出提高1 倍～2 倍;对生态环境利大于弊。同时日光温室生产提高了农民的收入,促进了地方经济的发展。
This paper analyses the advantages and disadvantages of developing green house in the Hexi Corridor region from the aspects of resources utilization,environmental protection,economic development and etc. Results show that green houses can lead to signifincant raising of effecient use of sunlight,heat, moisture and soil as well. It can turn at least 33% of the ineffective solar energy at least into available resources,raise the potential productivity of sunlight and temperature by 24 585 kg/hm 2(corn) with a increasing percentage of 75% and the accumulated temperature (≥10℃) by 3 364.9℃ with a ascending proportion of 123%; extend the growing season double; and raise both the water use effeciency and yeild per unit area 1~2 times;which means that the benefits of green house far exceed its disadvantages evironmentally. In addition, it can increase farmers income as well as boost the local enonomic development.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第4期111-116,共6页
Agricultural Research in the Arid Areas
基金
甘肃省气象局科研项目
