| 彭玉龙1，芶剑渝1，展岚波1，张之矾1，孟 源1，贾笛迩2，李章海3，朱英华2.黔北高山区不同种植密度烤烟冠层特征参数动态变化[J].广东农业科学,2018,45(9):14-20 |
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黔北高山区不同种植密度烤烟冠层特征参数动态变化 |
| Dynamic change of canopy characteristic parameter of flue-cured tobacco with different planting density in highmountainous area of northern Guizhou |
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| DOI：10.16768/j.issn.1004-874X.2018.09.003 |
| 中文关键词: 烤烟 透光率 叶向值 叶方位 叶面积 |
| 英文关键词: flue-cured light transmittance leaf orientation value leaf orientation leaf area |
| 基金项目:贵州省烟草局项目（201612） |
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| 摘要点击次数: 1559 |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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