聊城大学学报(自然科学版)
聊城大學學報(自然科學版)
료성대학학보(자연과학판)
Journal of Liaocheng University (Natural Science Edition)
2015年
3期
56-59
,共4页
常海娜%周静%宋娇敏%司东霞%李海云
常海娜%週靜%宋嬌敏%司東霞%李海雲
상해나%주정%송교민%사동하%리해운
钾%大白菜%生长%根系形态
鉀%大白菜%生長%根繫形態
갑%대백채%생장%근계형태
Potassium%Chinese cabbage%grow th%root morphology
通过盆栽实验,研究了5个供钾水平(0、2.5、5.0、7.5和10.0mM)对大白菜苗期生长指标和根系形态参数的影响.结果表明:随钾浓度的提高,大白菜幼苗地上部鲜重和整株鲜重都基本呈现先增后减的趋势,当钾水平为5.0mM 时最高.5.0mM 钾水平处理下大白菜幼苗根系总根长、总表面积,以及细根(直径≤0.4 mm)根长和表面积都显著高于其它处理.适度的钾水平有利于提高大白菜幼苗根系总根长、总表面积,特别是细根(直径≤0.4 mm)根长和表面积,从而有利于大白菜幼苗生长.
通過盆栽實驗,研究瞭5箇供鉀水平(0、2.5、5.0、7.5和10.0mM)對大白菜苗期生長指標和根繫形態參數的影響.結果錶明:隨鉀濃度的提高,大白菜幼苗地上部鮮重和整株鮮重都基本呈現先增後減的趨勢,噹鉀水平為5.0mM 時最高.5.0mM 鉀水平處理下大白菜幼苗根繫總根長、總錶麵積,以及細根(直徑≤0.4 mm)根長和錶麵積都顯著高于其它處理.適度的鉀水平有利于提高大白菜幼苗根繫總根長、總錶麵積,特彆是細根(直徑≤0.4 mm)根長和錶麵積,從而有利于大白菜幼苗生長.
통과분재실험,연구료5개공갑수평(0、2.5、5.0、7.5화10.0mM)대대백채묘기생장지표화근계형태삼수적영향.결과표명:수갑농도적제고,대백채유묘지상부선중화정주선중도기본정현선증후감적추세,당갑수평위5.0mM 시최고.5.0mM 갑수평처리하대백채유묘근계총근장、총표면적,이급세근(직경≤0.4 mm)근장화표면적도현저고우기타처리.괄도적갑수평유리우제고대백채유묘근계총근장、총표면적,특별시세근(직경≤0.4 mm)근장화표면적,종이유리우대백채유묘생장.
Effects of five different potassium (0 mM ,2 .5 mM ,5 .0 mM ,7 .5 mM and 10 .0 mM ) on the grow th and root morphology index of Chinese cabbage seedling were studied using a pot experiment . The results showed that :with the increase of potassium concentration ,the shoot fresh weight and the whole plant fresh weight of Chinese cabbage seedlings were increased at first and then decreased ,and the highest value occured at the 5 mM .Total root length ,total surface area ,the length and surface area of fine roots (diameters≤0 .4 mm) of Chinese cabbage seedling treated by 5 mM were significantly high‐er than that of other treatments .Moderate levels of potassium to improve total root length ,total surface area ,especially the length and surface area of fine root (diameters≤0 .4 mm) ,thus contributing to the grow th of Chinese cabbage seedling .