| By changing the planting density of tobacco to form different population structure, growing period, agronomic traits,photosynthesis, yield, output value and chemical composition was determind to obtain optimal planting density. The results showed that, low planting density improved the agronomic traits, chlorophyll content and photosynthesis of tobacco, and the plant individual development was
good, but the yield, output value and chemical coordination was lower than the treatments of high planting density. In this study, as the yield and output value was highest, and chemical coordination was also good, the optimal planting density was 18 510 plants/hm2 for current production of flue-cured tobacco in Xingren county. |
