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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (11): 51-55.doi: 10.11924/j.issn.1000-6850.casb18040129

Special Issue: 烟草种植与生产

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Influence of Ridging Direction on Production of Flue-cured Tobacco in Mountainous Area

  

  • Received:2018-04-25 Revised:2019-03-21 Accepted:2018-07-25 Online:2019-04-15 Published:2019-04-15

Abstract: To introduce and promote the cultivation technique of ridge on horizontal slope in Wuling mountainous area, it is necessary to put forward an optimized cultivation technique, which will be suitable for planting flue-cured tobacco on hillside and improve its quality and quantity. In this study,‘Yunyan 87’was planted on the 15° angle hillside field treated by four cultivation techniques of slope ridging, cross ridging, askew ridging (slanted 75°) and askew ridging (slanted 60°) with three duplications via randomized block design. And the dynamic changes of soil moisture in the ridges, agronomic traits, economic traits and leaf chemical components of tobacco under different treatments were analyzed. The results showed that the cross ridging and askew ridging (slanted 75°) promoted the opening of the upper leaves and increased the width of the upper leaves in tobacco. The yield of tobacco planted in the askew ridge (slanted 75°) was the highest, and significantly higher than that in the askew ridge (slanted 60°). The quality of tobacco planted in the askew ridge (slanted 75°) was significantly better than that of other ridges. And the proportion of upper and medium leaves of tobacco planted in the askew ridge (slanted 75° ) was significantly higher than that of the askew ridge (slanted 60° ). However, the coordination of inherent chemical composition of tobacco leaves in the four treatments was not significantly different. In conclusion, ridges with a gradient of 75° could help the ridge to retain moisture and fertilizer, and achieve the purpose of increasing production value when planting tobacco in the common hillside field.