Effects of Planting Density on the Growth,Yield and Quality of Flue-cured Tpbacco in the Arid Area
[Objective] The research aimed to explore the suitable planting density of flue-cured tobacco in the arid area and provide the scientific basis for guiding its production in the field. [Method] Taking Annren county of Hunan province as an example, the effects of different planting density (15 000, 16 500,18 000,19 500 plants/hm2 on the growth period and the growth of tobacco plants, the yield and quality of tobacco leaves were studied. [Result] Planting density had little effects on the growth period of tobacco plants. With the increasing of planting density, leaf area index and plant height increased, the stem thickness became smaller and the node distance became longer. Different planting density had a significant effect on the yield and quality of tobacco leaves. When the planting density was 18 000 plants/hm2, the number of remained leaves in tobacco plants and the yield of tobacco leaves were both highest, being 348 660 leaves/hm2、2397.3 kg/hm2 resp. With the increasing of planting density, the proportion of superior tobacco leaves, the proportion of middle and superior tobacco leaves and the average tobacco price were all gradually decreased. The production value of tobacco leaves showed the trend of first increasing and then decreasing with the increasing of planting density and that with the planting density of 18 000 plants/hm2 was highest (26 801.85 yuan/hm2). [Conclusion] Under the specific climatic and soil conditions in Anren county, the best planting density of flue-cured tobacco in the arid area wasl8 000 plants/hm2.
Flue-cured tobaccoPlanting densitiyGrowth and developmentYeildQuality
国家科技期刊平台
NSTL
万方数据
维普
