贵烟2号留叶数对产量和质量的影响

为探明贵烟2号最佳留叶数,研究了不同留叶数对烤后烟叶产质量的影响。结果表明:本试验范围内,产量随着留叶数的增加呈增加的趋势,以留叶数22片最高为184.9 kg/667m~2,较其余处理高6.4 kg/667m~2~26.7 kg/667m~2;均价、产值、上等烟率、上中等烟率则随着留叶数的增加呈先增后降的趋势,均价、上等烟率、上中等烟率均以留叶数18片最高,分别达19.80元/kg、47.04%、87.15%,较其余处理分别高0.57元/kg~1.96元/kg、1.88~7.78个百分点、1.90~9.77个百分点,产值以留叶数20片最高为3 432.6元/667m~2,较其余处理高32.9元/667m~2~502.7元/667m~2。评吸得分随留叶数的增加表现出先增后降的趋势,留叶数18片最高为60.6分,其次留叶数20片为59.6分,且二者化学成分及协调性均较好。综合经济效益及质量来看,本试验最佳留叶数范围18~20片。

Effects of Leaf Numbers Remained on the Yield and Quality of Flue-cured Tobacco Guiyan 2

Currently, the effect of remained leaf number on the flue-cured tobacco yield and quality was investigated using Guiyang 2 in Qingzhen city. The results showed that the yield might be enhanced with the increase of remained leaf number until 22 leaves per plant, whose yield was as high as 184 kg/667m2 , being 6.4 kg/667m2~26.7 kg/667m2 higher than that of other treatments. The average price, output, average leaf percentage, above-average leaf percentage of tobacco firstly in﹣creased, then decreased with the increase of remained leaf number. The average price, average leaf percentage, above-av﹣erage leaf percentage got their ceiling from the 18-leaf-plant, reaching up to 19.80 Yuan/kg, 47.04%, 87.15%respective﹣ly, and being higher than other treatments by 0.57~1.96 Yuan/kg, 1.88~7.78 percentage points, 1.90~9.77 percentage points, respectively. The highest output ( 3432. 6 Yuan/667m2 ) was obtained from the 20-leaf-plant, being 32. 9 Yuan/667m2~502.7 Yuan/667m2 higher than that of other treatments. The harmony of chemical compositions was better in 18-20-leaf-plants. The smoking scores firstly increased then decreased with the increase of remained leaf number, the first smoking score (60.6 points) was gained from the 18-leaf-plants, and the second (59.6 points) was from the 20-leaf-plants. Therefore, the optimal number of remained leaves was 18~20 per plant for Guiyan 2.