婴儿泪在室内生长的光照范围研究

Radiation (PAR) scope of indoor grouth of Soleirolia soleirolii

研究了婴儿泪适宜生长的光照范围问题。通过测定试验房间光照的分布图 ,选择试验房间内具有代表性的光区进行栽培试验。实验环境温度为 15～ 2 5℃ ,湿度为 33%～ 6 9%。经栽培 4 0d后 ,用LI 6 4 0 0测定其不同光强下的光合特性 ,计算光补偿点、光饱和点、最大净光合速率。同时测定不同试验区植株的枝长与叶片数量的生长量。结果表明 :婴儿泪在 >8 5μmol·m-2 ·s-1～ <2 99 0 μmol·m-2 ·s-1(4 2 5～ 14 95 0lx ,RH33%～ 6 9% ,温度 15～ 2 5℃ )

The studies on the photosynthetic characters and growth of Baby's Tears in response to photosynthesis active radiation (PAR) were conducted indoors. The optimum PAR for the growth of S. soleirolii were investigated in the study. The experiment sites were selected to represent the patterns of light intensities in the rooms. The room temperature was in the arrange of 15～25?℃ and 33%～69% was for the relative humidity. After 40 days cultivation, the photosynthetic characters of S. soleirolii plants in response to different PAR were measured with a LI-6400 apparatus. The light compensation point, light saturation point, and the maximum net photosynthesis rate were calculated. The increments in branch length and leaf quantity were also measured in all the experiment sites. The results showed that the PAR scope for the growth of S. soleirolii was >8.5μmol·m -2·s -1～<299.0?μmol·m -2·s -1 (425～14950 lx).