不同设施覆盖类型冬至前后的温度和光照性能比较
- 摘要:
- 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。
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备注/Memo
基金:安徽科技学院重点建设课程资助项目(ZDKC1111);;国家星火计划资助项目(2012GA710029)