腐殖酸配施草木灰对烟草生长和烟叶品质的影响OA

To investigate the effects of humic acid on flue-cured tobacco growth and leaf quality,this study set up a blank control group and 6 treatment groups,namely T1 to T6(0.1%humic acid+soil conditioner,0.2%humic acid+soil conditioner,0.3%humic acid+soil conditioner,0.1%humic acid+plant ash,0.2%humic acid+plant ash,0.3%humic acid+plant ash),and analyzed the root weight,physical properties,appearance quality and sensory quality of cured tobacco under different treatments.The results showed that the tobacco leaves treated with T6 had the largest root weight(18.30 g),the most effective leaf number(21.33 leaves),the highest plant height(111.67 cm),and the longest maximum leaf length(79.67 cm).The proportions of superior leaves in the upper,middle and lower parts of the tobacco after curing in each treatment ranged from 75.33%to 78.22%,92.00%to 97.43%,and 11.33%to 17.20%,respectively.The T6 treatment showed a more significant improvement effect.The comprehensive score of physical properties of the leaves in the T6 treatment was the highest(0.92 points),and the comprehensive score of appearance quality was also the highest(0.73 points).In conclusion,the T6 helps to improve the agronomic traits,physical properties,appearance quality and sensory quality of the cured tobacco leaves.