水培条件下钾对大蒜幼苗生长及根系活力的影响  

Effects of Potassium in Nutrient Solution on Allium sativum Seedling Growth as well as Root Activity of Garlic

作　　者：陈昆[1] 刘世琦[1] 张自坤[1] 

机构地区：[1]山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,山东泰安271018

出　　处：《北方园艺》2011年第1期20-23,共4页Northern Horticulture

基　　金：国家科技支撑计划资助项目(2006BAD13B06-4-9);山东省农业重大创新资助项目

摘　　要：以‘金乡白皮蒜’为试材,采用设施水培探讨了不同K+浓度对大蒜幼苗生长及根系活力的影响。结果表明:钾可显著增加大蒜幼苗生长量及根系活力;当营养液K+浓度为6.0mmol/L时,大蒜幼苗叶长、叶宽、假茎高、假茎粗、根长及根系活力最大,绿叶数及根系数最多,大蒜幼苗叶片、假茎、鳞茎及根系干、鲜重也最大,较不施钾处理干重分别增加133.91%、167.22%、146.31%和116.74%,鲜重分别提高168.34%2、43.18%、153.24%和128.78%。In this study,＇Jinxiang White Garlic＇ was cultivated with solution culture to investigate the effects of five different K＋ concentrations on Allium sativum seedling growth as well as root activity of garlic.The results showed that potassium could remarkably improve the Allium sativum seedling increment and activity of root system.The leaf length,leaf width,pseudostem height,pseudostem diameter,root activity,green leaf numbers and root numbers were largest,when K＋ concentration was 6.0 mmol/L.And compared with 0 mmol/L K＋,the treatment of 6.0 mmol/L K＋ increased the dry weight of green leaves,pseudostem,bulb and root by 133.91%,167.22%,146.31% and 116.74%,respectively,while fresh weight of green leaves,pseudostem,bulb and root enhanced by 168.34%,243.18%,153.24% and 128.78%,respectively.

关 键 词：大蒜 钾 生长 鲜重 根系活力 

分 类 号：S633.4[农业科学—蔬菜学]