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[目的]研究霜期设施农业生产期光资源变化问题,以期为合理掌握和推进霜期设施农业的可持续发展奠定基础。[方法]采用气候倾向率和标准偏差方法,分析1961～2010年霜期设施农业生产期光照资源变化特征。[结果]设施农业生产期为10月至翌年4月,太阳总辐射和日照时数呈显著减少趋势,其气候倾向率分别为-0.0669MJ/(m2·a)和-2.0369h/a;2001～2010年平均每日减少日照时间0.49h。12月至翌年2月寒冷期太阳总辐射和日照时数存在减少倾向,其气候倾向率分别为-0.0192MJ/(m2·a)和-0.4589h/a。光照资源的减少严重影响设施农业的发展,应及时调整和改进目前的日光温室大棚设施结构和栽培管理形式,增设调控设备,确保设施农业可持续发展。[结论]该研究结果为辽宁西部设施农业的可持续发展提供了帮助。
[Objective] The research aimed to study the change of light resources during the agricultural production period of frost-period facilities and lay the foundation for the reasonable grasping and promoting the sustainable development of frosted period agriculture. [Method] The climate change rate and standard deviation method were used to analyze the characteristics of light resources during the agricultural period of 1961 ~ 2010 in frost period. [Result] The total solar radiation and sunshine duration decreased significantly from October to April of the following year. The climate trend rates were -0.0669MJ / (m2 · a) and -2.0369h / a respectively. ~ 2010 average daily reduction of sunshine time 0.49h. The total solar radiation and sunshine duration decreased in the cold period from December to the next February, with the tendency rates of -0.0192 MJ / (m2 · a) and -0.4589 h / a, respectively. The reduction of light resources seriously affects the development of facility agriculture. It is necessary to timely adjust and improve the present facility structure and cultivation and management forms of solar greenhouse and add control equipment to ensure the sustainable development of facility agriculture. [Conclusion] The results of this study aided the sustainable development of facility agriculture in western Liaoning.