Abstract:

The paper aims to study the effects of bio-organic fertilizer, microbial inoculants and glutathione on the growth and quality of continuous cropping tobacco. Using ‘Yunyan 87' as the experimental material, the field experiment was carried out on the flue-cured tobacco plots for many years. The effects of different treatments on the growth and quality of tobacco were evaluated by taking the agronomic, economic and internal quality of tobacco as the indicator. On the basis of conventional fertilization, the application of bio organic fertilizer, functional microbial agents and glutathione could promote tobacco early and rapid growth, improve the agronomic properties, disease resistance, economic properties and the coordination of chemical components of middle and upper leaves. The application effect of functional microbial agent B and functional microbial agent C were better in improving the agronomic and economic properties of tobacco. In term of improving the disease resistance of tobacco plants, functional microbial agent B was the best, followed by biological organic fertilizer and functional microbial agent C. The application of functional microbial agent B and 10% glutathione had better effect on improving tobacco quality. On the whole, the three treatments treated with microbial agents were high on the yield and output value, and the proportion of medium and high-grade tobacco was high as well, and the overall performance was excellent. They could improve the yield and quality of flue-cured tobacco in long-term continuous cropping areas, and had promotion value.

Key words: continuous cropping obstacle, agronomic traits, economic traits, disease, chemical composition