喷布低浓度NaHSO_3溶液对茶树抗寒性的影响  

Effect of foliage spraying sodium bisulfite at low concentration on resistance to coldness of tea trees

作　　者：陈杭芳[1] 胡民强[2] 杨勇[3] 杨万军[3] 蒋德安[3] 

机构地区：[1]浙江大学农业与生物技术学院,浙江杭州310029 [2]杭州万向职业技术学院,浙江杭州310023 [3]浙江大学生命科学学院,浙江杭州310058

出　　处：《浙江农业学报》2007年第3期184-187,共4页Acta Agriculturae Zhejiangensis

基　　金：浙江省教育厅资助项目(20040183)

摘　　要：低浓度NaHSO3处理能明显降低田间茶树遇早春大雪后茶芽和叶片的冻害,使茶芽恢复生长加快。同时,在低温下叶片电导率显著低于对照。NaHSO3处理可明显提高叶片光合速率,促进光能更多的由光系统Ⅱ向光系统Ⅰ转移,加速循环光合磷酸化,提高植物抗低温能力。Foliage spraying NaHSO3 at low concentration could obviously decrease the numbers of frozen buds and leaves of tea trees grown in the fields when the trees encountered a heavy freezing injury in the early spring. It also speeded up the recovery growth of the buds and lowered the electrical conductivity of the leaves after the freezing injury. NaHSO3 could significantly increase photosynthetic rate of leaves and enhance light energy transfer from PS Ⅱ to PS Ⅰ. It also accelerated cyclic photophosphorylation and enhanced the resistance to freezing injury of tea trees.

关 键 词：NAHSO3 茶树 抗低温 电导率 循环光合磷酸化 

分 类 号：S571.1[农业科学—茶叶生产加工]