摘要： 采用槽栽方法,以根际全基质栽培为对照(CK:3 200~4 500μL/L CO2;20.1%~20.3%O2),研究了根际自然扩散通气处理(T1:2 000~3 000μL/L CO2;20.35%~20.5%O2)、根际管通气处理(T2:800~1 500μL/L CO2;20.5%~20.75%O2)和根际两端通气处理(T3:380~820μL/L CO2;20.8%~20.9%O2)对马铃薯叶片叶绿素含量、净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)、PSⅡ的潜在活性和原初光能转换效率以及光合代谢产物可溶性蛋白和可溶性糖含量的影响。结果表明,改善根际通气条件能促进马铃薯光合作用与光合代谢产物的转运和积累。其中T2处理下马铃薯植株的生长效果最好,其次是T1处理。

关键词: 根际通气, 马铃薯, 光合特性, 叶绿素荧光参数

Abstract: With the method of groove,this paper study the effect of different rhizosphere ventilation treatment on potato′s leaves chlorophyll content,net Photosynthetic(Pn),Stomatal conductance(Gs),Intercellular CO2 concentration(Ci),chlorophyll fluorescence Parameters and soluble protein,soluble sugar with the whole substrate culture as antitheses(CK:3 200-4 500 μL/L CO2;20.1%-20.3% O2),the treatment are rhizosphere natural diffusion ventilation(T1:2 000-3 000 μL/L CO2;20.35%-20.5% O2),rhizosphere tuberventilation(T2:800-1 500 μL/L CO2;20.5%-20.75% O2)and rhizosphere double end ventilation(T3:380-820 μL/L CO2;20.8%-20.9% O2),result proves that the improving rhizosphere ventilation can promote photosynthesis and the metabolites and accumulation of photosynthate.T2 achieves the best result to the potato,and T1 is the secondary.

Key words: Rhizosphere, Potato, Photosynthetic characteristics, ChlorophyII fluores parameters

中图分类号: 

• S532.01