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Journal of Agriculture ›› 2024, Vol. 14 ›› Issue (8): 38-43.doi: 10.11923/j.issn.2095-4050.cjas2023-0183

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Effects of Base Fertilizer Added Microbial Agent and Seedling-raising Fertilizer on Growth and Nutrient Accumulation of Flue-cured Tobacco

PENG Yingchun1(), TAN Zhipeng1, JIANG Zhimin2, WU Chujie3, WU Wenxin1, ZONG Yi1, LI Sijun1(), WEN Yongcai2, CHENG Mingzhu4, XIA Bing4, DENG Xiaohua4()   

  1. 1 Guiyang Branch, Hunan Chenzhou Municipal Tobacco Company, Chenzhou 424400, Hunan, China
    2 China Tobacco Zhejiang Industrial Co. Ltd, Hangzhou 310008, Zhejiang, China
    3 Yizhang Branch, Hunan Chenzhou Municipal Tobacco Company, Chenzhou 424200, Hunan, China
    4 College of Agronomy, Hunan Agricultural University, Changsha 410128, Hunan, China
  • Received:2023-08-15 Revised:2023-11-16 Online:2024-08-20 Published:2024-08-16

Abstract:

To clarify the effect of adding microbial agents in base fertilizer and urea in seedling-raising fertilizer on promoting early growth and rapid development of paddy-tobacco, ‘Yunyan 87’ was used as material, the two-factor experiment was designed by two application methods of base fertilizer with or without adding microbial agent, and three application methods of a single application of seedling-raising fertilizer for tobacco, a single application of urea, seedling-raising fertilizer for tobacco and urea mixed application. The effects of microbial agent, seedling-raising fertilizer and their interaction on root systems, agronomic traits, SPAD value, dry matter accumulation and nitrogen, phosphorus and potassium accumulation of flue-cured tobacco were studied. The results showed that the addition of microbial agent and seedling-raising fertilizer combined with urea was better than the single application of seedling-raising fertilizer and base fertilizer, root activity, root total length, surface area, average diameter, volume and root tip number were increased by 28.13%, 5.41%, 1.30%, 17.23%, 24.63% and 0.41%, respectively. Plant height, stem girth, number of leaves and maximum leaf area were increased by 10.06%, 2.30%, 18.75% and 37.26%, respectively. Total dry matter, nitrogen, phosphorus and potassium accumulation were increased by 27.18%, 37.21%, 36.57% and 23.97%, respectively. The addition of microbial agent and seedling-raising fertilizer combined with urea in the base fertilizer could improve the root activity of flue-cured tobacco, promote the root development of flue-cured tobacco, improve agronomic properties, facilitate the accumulation of flue-cured tobacco dry matter and nitrogen, phosphorus and potassium nutrients, promote the early growth and rapid development of flue-cured tobacco, and lay a foundation for the high quality and high yield of ‘Yunyan 87’ in tobacco-rice rotation area.

Key words: microbial agent, seedling-raising fertilizer, tobacco growth, dry accumulation and distribution, nutrient accumulation