摘要
通过对黔北高山区不同种植密度及不同生育时期烤烟冠层结构参数的测定,研究了烤烟冠层特征参数的动态变化。结果表明,在定行距(110 cm)的条件下,株距50~75 cm的烤烟单株叶面积积累量差异不大,三者单株最大叶面积积累量比株距38~43 cm高出0.58~0.66 m2。株距50 cm的烤烟最大群体叶面积积累量分别比株距75、60、43、38 cm高出0.96、0.42、0.70、0.42 m2/m2。株距低于或高于50 cm均导致烤烟单株或群体叶面积积累速率的降低。种植密度与中部叶位及垄面透光率呈负相关,与叶片垂直率及叶向值呈正相关;株距低于50 cm烤烟中部叶位和垄面的透光率明显降低,叶片垂直率及叶向值明显增加。由此可见,在黔北高山区植烟生态条件下,株距50 cm的种植密度既能保证烤烟中部叶位及垄面的透光率,又有利于单株及群体叶面积协调发展。
Canopy characteristic parameters with different planting density at different growth stages were investigated systematically in order to explore dynamic change of canopies characteristic of flue-cured tobacco in high mountainous area of sub plateau of northern Guizhou.The results showed that under the condition of a constant line spacing(110 cm),the leaf area accumulation per plant of plant space 50-75 cm was not obvious different,but they were higher 0.58~0.66 m2 than that of plant space under 38-43 cm.The leaf area accumulation of population of plant space 50 cm was the highest than that of the others,that was higher 0.96 m2/m2,0.42 m2/m2,0.70 m2/m2,0.42 m2/m2 than that of plant space 75 cm,60 cm,43 cm,38 cm.The rate of leaf area accumulation per plant or population beyond or under 50 cm was decreased.The planting density was negatively correlated with the light transmittance of the ridge and middle leaves,and that was positively correlated with leaf orientation value of upper and middle leaves and the vertical ratio of leaf.The light transmittance of planting space under 50 cm was lower than that of the others but their vertical ration of leaf and leaf orientation value of middle and upper leaf were increase.The conclusion was that the planting density with plant spacing 50 cm was not only favorable for the coordinated development of leaf area per plant and population,but also guaranteed the light transmittance of the ridge and middle leaves in high mountainous area of sub plateau of northern Guizhou.
作者
彭玉龙
芶剑渝
展岚波
张之矾
孟源
贾笛迩
李章海
朱英华
PENG Yu-long;GOU Jian-yu;ZHAN Lan-bo;ZHANG Zhi-fan;MENG Yuan;JIA Di-er;LI Zhang-hai;ZHU Ying-hua(Zunyi Tobacco Company,Guizhou Tobacco Company,Zunyi 563000,China;College of Agronomy,Anhui Agricultural University,Hefei 230036,China;Research Center of Tobacco and Health,University of Science and Technolongy of China,Hefei 230052,China)
出处
《广东农业科学》
CAS
2018年第9期14-20,共7页
Guangdong Agricultural Sciences
基金
贵州省烟草局项目(201612)
关键词
烤烟
透光率
叶向值
叶方位
叶面积
flue-cured
light transmittance
leaf orientation value
leaf orientation
leaf area
