积温与苗龄对大葱抽薹的影响  

Effects of Accumulated Temperature and Seedling Age on Welsh Onion Bolting

作　　者：高莉敏[1] 任志伟 陈运起[1] 陈伟[1] 董飞[3] 

机构地区：[1]山东省农业科学院蔬菜研究所/山东省设施蔬菜生物学重点实验室/国家蔬菜改良中心山东分中心,山东济南250100 [2]滨州市高新区青田街道办事处,山东滨州256660 [3]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《山东农业科学》2011年第11期38-40,共3页Shandong Agricultural Sciences

基　　金：公益性行业(农业)科研专项(200903018);山东省良种工程重大专项(2009LZ006-02)

摘　　要：为探讨积温、苗龄与大葱抽薹的关系,试验以章丘大葱为材料,研究了不同苗龄、不同积温条件下大葱抽薹的情况。结果表明:冬前活动积温为971℃(≥5℃)或777℃(≥10℃),有效积温为616℃(≥5℃)或542℃(≥10℃)时,大葱达到抽薹临界生理苗龄(株高13.8 cm,假茎直径0.4 cm,叶片数2.6叶)。达到此标准以上植株在经过550℃、262℃、132℃的0～10℃、0～7℃、0～5℃低温积温或者470℃、221℃、103℃的0～10℃、0～7℃、0～5℃有效低温积温即可发生抽薹。植株生理苗龄越大,抽薹需要的低温积温越少。Zhangqiu Welsh onion was used as material to discuss the effects of accumulated temperature and seedling age on bolting.The results showed that when the active accumulated temperature and the effective accumulated temperature before winter were 971℃（≥5℃）or 777℃（≥10℃）and 616℃（≥5℃）or 542℃（≥10℃）respectively,the Welsh onion reached the critical physiological seedling age for bolting（13.8 cm of plant height,0.4 cm of pseudostem diameter and 2.6 leaves）.The plants above these standards could bolt after the accumulated temperature of 0-10℃,0-7℃ and 0-5℃ reached to 550℃,262℃ and 132℃ respectively,or the effective accumulated temperature reached to 470℃,221℃ and 103℃ respectively.The older the Welsh onion seedlings were,the less accumulation of low temperature needed for bolting.

关 键 词：积温 苗龄 大葱 抽薹 

分 类 号：S633.101[农业科学—蔬菜学]