摘要
为探明不同施钾量对烤烟钾高效基因型新品系生长发育和含钾量的影响,以K326为对照,高钾新品系GK2、GK8为供试材料,分析比较烟株农艺性状、干物质积累量及含钾量在不同供钾水平下的差异。研究结果表明:增施钾肥可以明显改善烤烟高钾新品系的农艺性状,促进烟株株高、茎围、叶片大小及单株叶数的增加;团棵期不同供钾水平下烟株的长相长势基本一致,进入旺长期后,施钾240kg/hm^2时,烟株长势最好,不同品种(系)间表现为:GK8>GK2>K326。烤烟高钾新品系根、茎、叶的干物质积累量随着施钾量的增加而增加,不同时期各器官干物质积累量为:叶>茎>根;不同供钾水平为:T_3>T_2>T_1;不同品种(系)间表现为:GK8>GK2>K326。
In order to investigate the effects of potassium application rate on the growth and potassium content of new strains of tobacco with high potassium efficiency.Field experiments with tobacco K326（CK） and GK2,GK8（with high potassium efficiency） were conducted in tobacco cultivation.On the difference of growth period,the experiments analyzed agronomical traits,dry matter accumulation and potassium content of tobacco in different potassium application rate.The results showed that：potassium application could significantly improve the biological properties of the new strains,promote the increase of plant height,stem thickness,leaf size and leaf number.Growing tobacco looked basically the same under different potassium levels in the rosette stage.The tobacco plants grew best under the potassium level of 240 kg/hm^2 in the vigorous growing period,in different genotypes showed：GK8GK2K326.The dry matter accumulation of the new strains roots,stems and leaves increased with potassium application rate increased.Amount of dry matter accumulation in different organs showed：leafstemroot,between the different potassium levels showed：T_3 T_2 T_1 .In different genotypes showed：GK8GK2K326.
出处
《中国农学通报》
CSCD
北大核心
2011年第30期152-158,共7页
Chinese Agricultural Science Bulletin
基金
湖南省自然科学基金项目"烤烟钾高效基因型新材料的创造及遗传特性研究"(62020607114)
关键词
烤烟
高钾新品系
生长发育
钾
flue-cured tobacco
new strains
growth
potassium
