CAJ | 학술논문

利用涂料和遮阳网对塑料大棚进行了覆盖处理,研究涂料和遮阳网覆盖对棚内环境和辣椒光合特性的影响,结果表明,涂料的遮阳降温效果与其稀释比例有关,稀释比例越小,遮阳降温效果越好;除阴雨天棚内地温外,遮阳网具有明显遮光降温作用;相比遮阳网,1??3涂料能够降低阴雨天和早晚时分的遮光率,改善棚内光照,延长光照时间,降温效果好;遮阳网覆盖导致辣椒的净光合速率、气孔导度和蒸腾速率显著下降,胞间CO2浓度显著上升,不利于辣椒的光合作用,而涂料覆盖有助于改善中午强光时辣椒的光合作用,使其净光合速率和气孔导度显著上升,蒸腾速率显著下降.
이용도료화차양망대소료대붕진행료복개처리,연구도료화차양망복개대붕내배경화랄초광합특성적영향,결과표명,도료적차양강온효과여기희석비례유관,희석비례월소,차양강온효과월호;제음우천붕내지온외,차양망구유명현차광강온작용;상비차양망,1??3도료능구강저음우천화조만시분적차광솔,개선붕내광조,연장광조시간,강온효과호;차양망복개도치랄초적정광합속솔、기공도도화증등속솔현저하강,포간CO2농도현저상승,불리우랄초적광합작용,이도료복개유조우개선중오강광시랄초적광합작용,사기정광합속솔화기공도도현저상승,증등속솔현저하강.
The environment factors in plastic greenhouses and the photosynthesis characteristics of pepper were studied by shading using coating and shading-nets. The results were showed as the following:the effects of sun-shading and cooling of coating had relation to the dilution ratio. Smaller was the ratio, better was the effect. The shading-nets also had significant effects on sun-shading and cooling except the ground temperature in cloudy and rainy days. Compared with the shading-nets, the coating with 1:3 dilution ratio would be helpful to enhance the luminance and prolong time of illumination in greenhouses in the morning and the evening or in cloudy and rainy days. Of course, it also had a better effect on temperature-lowering than that of the shading-net. It would be decreased for Pn, Gs, Tr and increased for Ci distinctly when the shading-nets were used on greenhouses, which would be disadvan-tage for the photosynthesis of peppers. However, the paint coating could be propitious to improve the Pn, Gs and weaken the Tr of pepper, which was good for photosynthesis under stronger light at noon.