锌肥对寒地春玉米幼苗生长发育及光合特性的影响  

The Effects of Zinc on the Seedling Growth and Photosynthetic Performance of the Spring Maize

作　　者：蔡鑫鑫[1] 杨克军[2] 王玉凤[2] 吕晓丽[1] 张崎峰[1] 

机构地区：[1]黑龙江省农业科学院黑河分院,黑龙江黑河164300 [2]黑龙江八一农垦大学农学院,黑龙江大庆163319

出　　处：《中国西部科技》2014年第1期51-53,共3页Science and Technology of West China

基　　金："十二五"粮食丰产科技工程:东北平原北部(黑龙江)春玉米水稻持续丰产高效技术集成创新与示范(2011BAD16B11-01SF05);黑龙江省农业科学院青年基金(2012QN005)

摘　　要：本文通过水培试验，研究不同锌浓度对寒地春玉米幼苗的形态指标及气孔导度、蒸腾速率、净光合速率、胞间CO2浓度的影响。结果表明：寒地春玉米幼苗适宜锌浓度为0．01～1μmol·L-1。不同锌浓度对玉米生长的影响主要表现在地上部，而对地下部生长影响较小。在Zn浓度0．01～1μmo.L-1时锌的施用增加了玉米叶片气孔导度，提高了玉米叶片的净光合速率和蒸腾速率，提高了玉米幼苗瞬时水分利用率，从而增强了玉米幼苗的光合作用。In order to investigate the effects of different zinc concentrations on physiological characteristics of maize seedling, different Zn-tolerant maize cultivars were used as materials. The results showed that the appropriate concentrations of zinc for maize seedlings varies from 0.01-1μmoloL-1. Different Zn concentrations had more effects on aerial part than underground part. Zn concentration of 0.01 - 1 μmol.L-1 increased the stomata conductance of maize leaves, which increased the net photosynthetic rate and transpiration rate, as well as the instantaneous water use efficiency of maize seedlings, thus increasing the photosynthesis of maize seedlings.

关 键 词：玉米 锌 幼苗生长 光合特性 

分 类 号：S718.521.2[农业科学—林学]