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Zou Y.,Guizhou Tobacco Research Institute | Shi J.,Guizhou Tobacco Research Institute | Jiang W.,Guizhou Zunyi Tobacco Company | Meng L.,Guizhou Tobacco Research Institute | And 2 more authors.
Acta Tabacaria Sinica | Year: 2015

Effects of six different proportions of red and blue light of LED (light emitting diode) on seedling quality in multilayer system were studied. Two out of six proportions were selected to determine their impact on tobacco plant growth and tobacco leaf yield and quality. Results showed that light intensity had an enhanced trend with increase of proportion of blue light. The seedling rate under four proportions of red and blue light (1:1, 1:2, 1:3 and 1:4) was significantly higher than that under natural light. Dry matter accumulation was high, but seedling quality was similar to natural light. Chlorophyll content under LED light was significantly higher than that under natural light, but root activity under LED light was significantly lower. In addition, root activity under red and blue light with proportions of 1:1 and 1:4 was significantly stronger than that with other proportions. Tobacco plants with LED light treatment grew slow in root extending stage, and grew faster afterwards, and showed no significant difference with those under natural light treatment at maturing stage. The economic characters and chemical compositions of tobacco leaves under LED light treatments showed no significant difference with those under natural light. It is concluded that red and blue light with proportions of 1:1 and 1:4 could increase seedling rate and chlorophyll content of seedling leaves, and promote accumulation of dry matter. ©, 2015, State Tobacco Monopoly Bureau and China Tobacco Society. All right reserved.


Wang K.,Guizhou Zunyi Tobacco Company | Ding W.,Guizhou Zunyi Tobacco Company | Li L.,Guizhou Zunyi Tobacco Company | Li Z.,Guizhou Zunyi Tobacco Company | And 3 more authors.
Acta Tabacaria Sinica | Year: 2015

Planting scale, unit production value, average household income, and other indicators in 2013 of 3554 household growers from Zunyi municipality were investigated. Work related performance of 300 employees of local tobacco company was also surveyed and analyzed. Results showed that: irrational structure, high labor intensity, high risk, low comparative effectiveness, low professional service level, ageing employees and low literacy levels were all important factors affecting the sustainable and stable development of tobacco industry. Suggestions were proposed that a young and professional team of tobacco growers should be set up, development of tobacco grower cooperatives should speed up, and more and more well-educated and young employees should be encouraged to dedicate into modern tobacco agriculture. ©, 2015, State Tobacco Monopoly Bureau and China Tobacco Society. All right reserved.

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