贵州烤烟漂浮育苗连栋塑料大棚环境评价分析

[目的][方法]为合理调控烤烟漂浮育苗塑料大棚内环境因子和配置立体育苗人工补光方案,以烤烟幼苗不同生长时期的环境条件需求为基础,对贵州遵义地区典型配置塑料连栋大棚室内外温湿光环境及立体育苗架上不同层间的光环境进行了实地测试。[结果]结果表明,棚内晴天最高温度可达25 ℃,阴天为15.3 ℃,相对湿度40 %～90 %,光照强度50 umol.m-2.s-1～5000 umol.m-2.s-1,温湿环境适宜,光照充足,适宜烤烟幼苗的生长。但采用6层立体育苗架育苗时,育苗架的第5、6层自然光照环境足够满足烤烟幼苗的光照需求,第1层至第4层中间区域均达不到烤烟幼苗生长的光照环境需求,需要进行人工补光。[结论]该试验研究为提出更为合理的环境调控措施和人工补光配置方案提供理论依据

Tobacco Floating seedlings environment evaluation and analysis of multi-span plastic greenhouse in Guizhou

[Objective][Method]To control the environment factors and set artificial light scheme reasonably in multi-span plastic greenhouse used for tobacco seedling, basing on the different growth period environment need of flue-cured tobacco seedlings, the inside and outside environment factors and the light intensity change between seedling frame layers were tested and analyzed in Guizhou typical tobacco floating seedling plastic greenhouse. [Result]The result show, the highest temperature can reach 25 ℃ in sunny day, but in cloudy day, it is only 15.3 ℃, the relative humidity changed from 40 % to 90 %, and the light intensity range was 50 to 5000 umol.m-2.s-1, which are fit to tobacco seedling growth. When using the three-dimensional seedling frame with 6 layers, the natural light on the fifth and sixth layer is enough for seedling growth, but the artificial light was need to be added from the first to the fourth layer. [Conclusion]This experiment research can give theoretical proof for reasonable environment adjust measures and artificial light scheme.