以安徽凤阳当地典型的设施类型为试验对象,研究比较了单层覆盖的温室和大棚、2层覆盖的温室+拱棚和大棚+拱棚等不同设施覆盖类型在冬至前后对气温、土温和光照强度等性能的影响。结果表明:冬至前后,温室+拱棚保持日最低气温在5℃以上,最低土温可达9.2℃;大棚+拱棚气温在0~5℃,最低土温6.3℃;温室气温有时在0℃以下,最低土温7.5℃;大棚气温则常在0℃以下,有时达-4.75℃,最低土温达3.95℃。在观测的天数范围内,单层覆盖的温室和大棚、2层覆盖的温室+拱棚和大棚+拱棚日平均最高光照强度分别为25.8和25.6、12.1和7.2klx。建议在淮河流域进行喜温作物的冬季生产适宜采用温室+拱棚类型,其它覆盖类型需再增加保温或加温措施。
Taking Anhui Fengyang local typical types of facilitiesas as test object,the effect of air,soil temperature and light intensity before and after the winter solstice of the solar greenhouse and plastic high tunnel both with the monolayer coverage,of solar greenhouse+shed and plastic high tunnel+shed both with two layers were compared.The results showed that around winter solstice,the greenhouse+shed maintains daily min.air temperature 5℃ or more,the min.soil temperature up to 9.2℃;the high tunnel+shed temperatures 0~5℃,min.soil temperature of 6.3℃;greenhouse temperatures to below 0℃ at times,the min.soil temperature of 7.5℃;high tunnel temperature was often below 0℃,sometimes-4.75℃ and min.soil temperature of 3.95℃.Among the observed days,the average daily maximum light intensity of the greenhouse and high tunnel each with the monolayer coverage,of the greenhouse+shed and high tunnel+shed each with two layers were 25.8 and 25.6,12.1 and 7.2 klx,respectively.The cover type of greenhouse+shed could be top-priority for winter production of thermophilic crops in the Huaihe River drainage area,while other types need to increase the heat insulation or heating measures were suggested.