HUBEI AGRICULTURAL SCIENCES ›› 2025, Vol. 64 ›› Issue (5): 105-111.doi: 10.14088/j.cnki.issn0439-8114.2025.05.016

• Horticulture & Local Products • Previous Articles     Next Articles

Analysis of influencing factors on water use efficiency of tobacco floating seedling in Yunnan Province

YUAN Guo-yi1, LI Xiang-yang2, LIU Zheng-hong3, DING Cong-kai3, ZHU Xuan-quan1, BAI Yu-xiang1, WANG Ge1, WANG Na1, ZHOU Peng1, DU Yu1, SONG Jie2   

  1. 1. College of Tobacco Science, Yunnan Agricultural University, Kunming 650201, China;
    2. China Tobacco Yunnan Import & #x00026;Export Co., Ltd., Kunming 650031, China;
    3. Chuxiong Company of Yunnan Tobacco Corporation, Chuxiong 675099, Yunnan, China
  • Received:2024-10-15 Online:2025-05-25 Published:2025-06-11

Abstract: In order to provide a theoretical basis for improving the utilization rate of water resources and promoting the development and improvement of seedling raising methods, the water consumption of tobacco floating seedling in Yunnan tobacco area was investigated. By means of inquiry, visit and on-the-spot investigation, the seedling raising bases in typical tobacco planting areas of 10 prefectures and cities in Yunnan Province were selected for investigation, and the factors affecting the water use efficiency of floating seedling raising were analyzed and clarified. The results showed that, there were two seedling specifications for transplanting seedlings under film (small seedlings) and conventional transplanting (large seedlings) in the survey area. The total water consumption and water consumption of tobacco seedlings were 311.74 kg/m2 and 216.48 kg/m2, 374.53 kg/m2 and 248.64 kg/m2, respectively, and there was 99.48 kg/m2 ineffective water in the process of seedling raising, accounting for about 31.05% of the average total water consumption. In terms of water use efficiency, Chuxiong base was the lowest and Yuxi base was the highest . The water use efficiency of small seedlings was significantly negatively correlated with the size of the seedling tray, and the water use efficiency of large seedlings was significantly negatively correlated with longitude. There were differences in seedling water consumption in different tobacco areas; the longitude of the seedling point, the area of the seedling pool and the size of the seedling tray were important factors affecting the efficiency of the seedling water use. The water consumption of small seedlings was obviously lower than that of large seedlings. The water use efficiency of small seedlings could be improved by using smaller seedling tray specifications. The water use efficiency of large seedlings was positively correlated with seedling tray specifications, seedling pool area and other factors.

Key words: tobacco floating seedling, water use efficiency, correlation analysis, influencing factors, Yunnan Province

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