不同遮光条件对玉米生长的影响  

Effects of Different Shading Conditions on the Growth of Maize

作　　者：李作一[1] 田森林[2] 

机构地区：[1]山西省农业科学院高粱研究所,山西晋中030600 [2]山西省农业科学院试验研究中心,山西太原030031

出　　处：《山西农业科学》2017年第1期51-53,共3页Journal of Shanxi Agricultural Sciences

基　　金：山西省财政厅财政支农项目(ZYYF2015-03)

摘　　要：研究了不同遮阴条件对玉米光合速率、蒸腾速率、气孔限制值、胞间二氧化碳浓度的影响。结果表明,遮阴率为25%(透光率75%)防雨棚中的玉米叶片日均净光合速率最高,比全光照条件高21.4%;全光照条件下,供试玉米的日均蒸腾速率最高;不同光照处理条件下,玉米叶片的胞间CO_2浓度随着透光程度的降低而不断降低,而气孔限制值则随着透光程度的降低而增加。The paper studied the effect of different shading conditions on photosynthetic rate, transpiration rate, stomatal limitation and intercellular CO2 concentration of maize. The result showed that when the shading rate was 25%（75% transmittance）in the leaves of maize canopy, average net photosynthetic rate was the highest, was higher than that of all illumination conditions 24%. Under illumination, the average daily transpiration rate of maize was the highest. In different light conditions, the intercellular CO2 concentration of maize leaf decreased with the decrease of transmittance, and stomatal limitation value decreased with increasing of transmittance.

关 键 词：玉米 光照 净光合速率 蒸腾速率 气孔限制值 胞间二氧化碳浓度 

分 类 号：S513[农业科学—作物学]