不同配方高碳基有机肥对广西主要烟区烟叶产质量的影响.

[Objective] To clarify the formula of high-carbon-based organic fertilizer suitable for tobacco areas in Guangxi. [Method]Field experiments were carried out in Baise, Hezhou and Hechi tobacco areas of Guangxi by different fertilization treatments (no fertilization, conventional fertilization, conventional fertilization with different formulas of high-carbon base fertilizer). [Result]In Baise tobacco area, conventional fertilization + star anise high-carbon-based fertilizer was helpful for tobacco plant growth. It could promote the development of tobacco roots, and the total root length, root volume and root tip number were higher than those of the control. It could improve the chemical composition of post-roast cigarette and increase the potassium-to-chloride ratio and glyco-alkali ratio of post-roast tobacco; It could improve the economic indicators of post-flue-cured tobacco, increase the proportion of high-grade tobacco, output and output value; The pH was within the appropriate range; it could increase the content of nitrate, ammonium nitrogen and available phosphorus in the root surrounding soil, which could increase by 55.29%, 35.98% and 43.86% compared with conventional fertilization. In Hezhou tobacco area, the fertilization treatment of conventional fertilization + high-carbon based fertilizer No. 3 was helpful for the opening of the upper leaf, and the leaf length and leaf width increased by 7 and 3 cm compared with conventional fertilization. Compared with conventional fertilization, root length and root volume increased by 12.48% and 52.53%, respectively. The chemical composition of post-roasted tobacco is more reasonable, which increases the sugar content of post-roasted tobacco and forms a fragrant sweetness; The proportion of post-flue-cured tobacco of B1F and B2F grades reached 17.29% and 35.47%, and the output value reached 32 521.35 Yuan/hm². In Hechi tobacco area, the fertilization treatment of conventional fertilizer nitrogen reduction by 10% + high-carbon-based fertilizer No. 7 was conducive to the opening of the middle and upper leaves, compared with the conventional treatment, the plant height increased by 11.93%, and the leaf length and leaf width of the middle and upper leaves increased by 11.34%, 17.48%, 11.61% and 12.70%, respectively. The effect of promoting root development was obvious, and the root volume increased by 18.39% compared with conventional fertilization. It could improve the chemical composition of post-flue-cured tobacco, increase the potassium content and potassium-chloride ratio of post-roasted tobacco; The proportion of high-grade tobacco reached 46.10%, and the output value reached 39 520.95 Yuan/hm². [Conclusion] Conventional fertilization + star anise, high-carbon based fertilizer in Baise tobacco area could promote the growth and development of tobacco, improve the chemical composition of post-flue-cured tobacco, improve the economic characteristics of post-flue-cured tobacco, improve pH and increase the available nutrient content, and this fertilizer application amount was more suitable for promotion in Baise tobacco area. When fertilization treatment in Hezhou tobacco area was conventional fertilization+high carbon-based fertilizer No. 3, it could promote the opening of upper leaves, root development, coordinate the chemical composition of post-flue-cured tobacco, and improve the output value yield, and this fertilizer application amount is more suitable for promotion in Hezhou tobacco area; Fertilization treatment in Hechi tobacco area could promote the opening of upper leaves, root development, coordinate the chemical composition of post-flue-cured tobacco, and improve the output value when the fertilizer treatment was reduced by 10% + high-carbon-based fertilizer No. 7 in Hechi tobacco area, and this fertilizer application amount was more suitable for promotion in Hechi tobacco area. [ABSTRACT FROM AUTHOR]