Effects of Tobacco Stem Biochar Based Fertilizer Application on Production and Quality of Flue-cured Tobacco
To explore the effects of tobacco stem biochar based fertilizer application on yield,quality and disease occurrence of flue-cured tobacco,flue-cured tobacco varieties'Honghuadajinyuan','K326'and'Yunyan 87'were used as the research objects,and one conventional fertilization treatment(CK)and three different application rates of tobacco stem biochar(T1:400 g/plant,T2:500 g/plant and T3:600 g/plant)were setup to determine the growth period,agronomic traits,incidence rate,economic traits and chemical composition of flue-cured tobacco with different varieties and treatments.The results showed that:(1)compared with the control treatment,the application of biochar-based fertilizer could prolong the growth period of flue-cured tobacco'Honghuadajinyuan','K326'and'Yunyan 87',and significantly improve the plant height,stem circumference,effective leaf number,maximum leaf length and leaf width of flue-cured tobacco.The application amount of 600 g/plant for'Honghuadajinyuan'and the application amount of 500 g/plant for'K326'and'Yunyan 87'had the best effect.(2)The incidence of tobacco mosaic disease,wildfire disease and climatic spot disease treated with biochar-based fertilizer was significantly lower than that of the control treatment.Among them,the incidence of tobacco plant disease was the lowest when the application amount for'Honghuadajinyuan'and'K326'was 600 g/plant and the application amount for'Yunyan 87'was 500 g/plant.(3)The yield,average price,proportion of medium-grade tobacco and output value of tobacco treated with biochar-based fertilizer were significantly higher than those of control,and the application of 600 g/plant for'Honghuadajinyuan',500 g/plant for'K326'and'Yunyan 87'had the best effect on improving the quality of tobacco plants.(4)After the application of biochar-based fertilizer,'Honghuadajinyuan'could significantly reduce the content of total sugar and reducing sugar in tobacco leaves,and made the content of total nitrogen,potassium oxide and water-soluble chlorine in tobacco leaves more suitable.'K326'and'Yunyan 87'could significantly reduce the content of total sugar,reducing sugar,total nitrogen,nicotine,potassium oxide and water-soluble chlorine in tobacco leaves.The content of chemical components in tobacco leaves was the most suitable when the application amount for'Honghuadajinyuan'was 600 g/plant,the application amount for'K326'and'Yunyan 87'was 500 g/plant.In summary,the application of 600 g/plant for'Honghuadajinyuan',500 g/plant for'K326'and'Yunyan 87'biochar-based fertilizer had the best effect on the growth of tobacco plants.
flue-cured tobaccotobacco stem biochar based fertilizeragronomic traitsproduction qualitychemical composition
万方数据
维普
